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OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/python?expand=0&rev=24

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OBS User unknown 2008-08-08 00:47:35 +00:00 committed by Git OBS Bridge
parent a22d93ddf6
commit 5391cacb81
8 changed files with 1196 additions and 6 deletions
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566
python-2.5.2-CVE-2008-2315-int-overflows.patch Normal file
View File

@ -0,0 +1,566 @@
Index: Objects/unicodeobject.c
===================================================================
--- Objects/unicodeobject.c (revision 65261)
+++ Objects/unicodeobject.c (working copy)
@@ -240,6 +240,11 @@
return unicode_empty;
}
+ /* Ensure we won't overflow the size. */
+ if (length > ((PY_SSIZE_T_MAX / sizeof(Py_UNICODE)) - 1)) {
+ return (PyUnicodeObject *)PyErr_NoMemory();
+ }
+
/* Unicode freelist & memory allocation */
if (unicode_freelist) {
unicode = unicode_freelist;
@@ -1095,6 +1100,9 @@
char * out;
char * start;
+ if (cbAllocated / 5 != size)
+ return PyErr_NoMemory();
+
if (size == 0)
return PyString_FromStringAndSize(NULL, 0);
@@ -1693,8 +1701,9 @@
{
PyObject *v;
unsigned char *p;
+ Py_ssize_t nsize, bytesize;
#ifdef Py_UNICODE_WIDE
- int i, pairs;
+ Py_ssize_t i, pairs;
#else
const int pairs = 0;
#endif
@@ -1717,8 +1726,15 @@
if (s[i] >= 0x10000)
pairs++;
#endif
- v = PyString_FromStringAndSize(NULL,
- 2 * (size + pairs + (byteorder == 0)));
+ /* 2 * (size + pairs + (byteorder == 0)) */
+ if (size > PY_SSIZE_T_MAX ||
+ size > PY_SSIZE_T_MAX - pairs - (byteorder == 0))
+ return PyErr_NoMemory();
+ nsize = (size + pairs + (byteorder == 0));
+ bytesize = nsize * 2;
+ if (bytesize / 2 != nsize)
+ return PyErr_NoMemory();
+ v = PyString_FromStringAndSize(NULL, bytesize);
if (v == NULL)
return NULL;
@@ -2046,6 +2062,11 @@
char *p;
static const char *hexdigit = "0123456789abcdef";
+#ifdef Py_UNICODE_WIDE
+ const Py_ssize_t expandsize = 10;
+#else
+ const Py_ssize_t expandsize = 6;
+#endif
/* Initial allocation is based on the longest-possible unichr
escape.
@@ -2061,13 +2082,12 @@
escape.
*/
+ if (size > (PY_SSIZE_T_MAX - 2 - 1) / expandsize)
+ return PyErr_NoMemory();
+
repr = PyString_FromStringAndSize(NULL,
2
-#ifdef Py_UNICODE_WIDE
- + 10*size
-#else
- + 6*size
-#endif
+ + expandsize*size
+ 1);
if (repr == NULL)
return NULL;
@@ -2320,12 +2340,16 @@
char *q;
static const char *hexdigit = "0123456789abcdef";
-
#ifdef Py_UNICODE_WIDE
- repr = PyString_FromStringAndSize(NULL, 10 * size);
+ const Py_ssize_t expandsize = 10;
#else
- repr = PyString_FromStringAndSize(NULL, 6 * size);
+ const Py_ssize_t expandsize = 6;
#endif
+
+ if (size > PY_SSIZE_T_MAX / expandsize)
+ return PyErr_NoMemory();
+
+ repr = PyString_FromStringAndSize(NULL, expandsize * size);
if (repr == NULL)
return NULL;
if (size == 0)
@@ -4761,6 +4785,11 @@
return self;
}
+ if (left > PY_SSIZE_T_MAX - self->length ||
+ right > PY_SSIZE_T_MAX - (left + self->length)) {
+ PyErr_SetString(PyExc_OverflowError, "padded string is too long");
+ return NULL;
+ }
u = _PyUnicode_New(left + self->length + right);
if (u) {
if (left)
Index: Objects/tupleobject.c
===================================================================
--- Objects/tupleobject.c (revision 65261)
+++ Objects/tupleobject.c (working copy)
@@ -60,11 +60,12 @@
Py_ssize_t nbytes = size * sizeof(PyObject *);
/* Check for overflow */
if (nbytes / sizeof(PyObject *) != (size_t)size ||
- (nbytes += sizeof(PyTupleObject) - sizeof(PyObject *))
- <= 0)
+ (nbytes > PY_SSIZE_T_MAX - sizeof(PyTupleObject) - sizeof(PyObject *)))
{
return PyErr_NoMemory();
}
+ nbytes += sizeof(PyTupleObject) - sizeof(PyObject *);
+
op = PyObject_GC_NewVar(PyTupleObject, &PyTuple_Type, size);
if (op == NULL)
return NULL;
Index: Objects/bufferobject.c
===================================================================
--- Objects/bufferobject.c (revision 65261)
+++ Objects/bufferobject.c (working copy)
@@ -427,6 +427,10 @@
count = 0;
if (!get_buf(self, &ptr, &size, ANY_BUFFER))
return NULL;
+ if (count > PY_SSIZE_T_MAX / size) {
+ PyErr_SetString(PyExc_MemoryError, "result too large");
+ return NULL;
+ }
ob = PyString_FromStringAndSize(NULL, size * count);
if ( ob == NULL )
return NULL;
Index: Objects/longobject.c
===================================================================
--- Objects/longobject.c (revision 65261)
+++ Objects/longobject.c (working copy)
@@ -70,6 +70,8 @@
PyErr_NoMemory();
return NULL;
}
+ /* XXX(nnorwitz): This can overflow --
+ PyObject_NEW_VAR / _PyObject_VAR_SIZE need to detect overflow */
return PyObject_NEW_VAR(PyLongObject, &PyLong_Type, size);
}
Index: Objects/stringobject.c
===================================================================
--- Objects/stringobject.c (revision 65261)
+++ Objects/stringobject.c (working copy)
@@ -75,6 +75,11 @@
return (PyObject *)op;
}
+ if (size > PY_SSIZE_T_MAX - sizeof(PyStringObject)) {
+ PyErr_SetString(PyExc_OverflowError, "string is too large");
+ return NULL;
+ }
+
/* Inline PyObject_NewVar */
op = (PyStringObject *)PyObject_MALLOC(sizeof(PyStringObject) + size);
if (op == NULL)
@@ -971,14 +976,24 @@
Py_INCREF(a);
return (PyObject *)a;
}
+ /* Check that string sizes are not negative, to prevent an
+ overflow in cases where we are passed incorrectly-created
+ strings with negative lengths (due to a bug in other code).
+ */
size = a->ob_size + b->ob_size;
- if (size < 0) {
+ if (a->ob_size < 0 || b->ob_size < 0 ||
+ a->ob_size > PY_SSIZE_T_MAX - b->ob_size) {
PyErr_SetString(PyExc_OverflowError,
"strings are too large to concat");
return NULL;
}
/* Inline PyObject_NewVar */
+ if (size > PY_SSIZE_T_MAX - sizeof(PyStringObject)) {
+ PyErr_SetString(PyExc_OverflowError,
+ "strings are too large to concat");
+ return NULL;
+ }
op = (PyStringObject *)PyObject_MALLOC(sizeof(PyStringObject) + size);
if (op == NULL)
return PyErr_NoMemory();
Index: Lib/test/seq_tests.py
===================================================================
--- Lib/test/seq_tests.py (revision 65261)
+++ Lib/test/seq_tests.py (working copy)
@@ -307,11 +307,13 @@
self.assertEqual(id(s), id(s*1))
def test_bigrepeat(self):
- x = self.type2test([0])
- x *= 2**16
- self.assertRaises(MemoryError, x.__mul__, 2**16)
- if hasattr(x, '__imul__'):
- self.assertRaises(MemoryError, x.__imul__, 2**16)
+ import sys
+ if sys.maxint <= 2147483647:
+ x = self.type2test([0])
+ x *= 2**16
+ self.assertRaises(MemoryError, x.__mul__, 2**16)
+ if hasattr(x, '__imul__'):
+ self.assertRaises(MemoryError, x.__imul__, 2**16)
def test_subscript(self):
a = self.type2test([10, 11])
Index: Lib/test/test_strop.py
===================================================================
--- Lib/test/test_strop.py (revision 65261)
+++ Lib/test/test_strop.py (working copy)
@@ -115,7 +115,26 @@
strop.uppercase
strop.whitespace
+ @test_support.precisionbigmemtest(size=test_support._2G - 1, memuse=5)
+ def test_stropjoin_huge_list(self, size):
+ a = "A" * size
+ try:
+ r = strop.join([a, a], a)
+ except OverflowError:
+ pass
+ else:
+ self.assertEquals(len(r), len(a) * 3)
+ @test_support.precisionbigmemtest(size=test_support._2G - 1, memuse=1)
+ def test_stropjoin_huge_tup(self, size):
+ a = "A" * size
+ try:
+ r = strop.join((a, a), a)
+ except OverflowError:
+ pass # acceptable on 32-bit
+ else:
+ self.assertEquals(len(r), len(a) * 3)
+
transtable = '\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037 !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`xyzdefghijklmnopqrstuvwxyz{|}~\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377'
Index: Lib/test/test_bigmem.py
===================================================================
--- Lib/test/test_bigmem.py (revision 65261)
+++ Lib/test/test_bigmem.py (working copy)
@@ -1,5 +1,5 @@
from test import test_support
-from test.test_support import bigmemtest, _1G, _2G
+from test.test_support import bigmemtest, _1G, _2G, _4G, precisionbigmemtest
import unittest
import operator
@@ -53,7 +53,23 @@
lpadsize += 1
self.assertEquals(s[lpadsize:-rpadsize], SUBSTR)
self.assertEquals(s.strip(), SUBSTR.strip())
-
+
+ @precisionbigmemtest(size=_2G - 1, memuse=1)
+ def test_center_unicode(self, size):
+ SUBSTR = u' abc def ghi'
+ try:
+ s = SUBSTR.center(size)
+ except OverflowError:
+ pass # acceptable on 32-bit
+ else:
+ self.assertEquals(len(s), size)
+ lpadsize = rpadsize = (len(s) - len(SUBSTR)) // 2
+ if len(s) % 2:
+ lpadsize += 1
+ self.assertEquals(s[lpadsize:-rpadsize], SUBSTR)
+ self.assertEquals(s.strip(), SUBSTR.strip())
+ del s
+
@bigmemtest(minsize=_2G, memuse=2)
def test_count(self, size):
SUBSTR = ' abc def ghi'
@@ -69,11 +85,45 @@
def test_decode(self, size):
s = '.' * size
self.assertEquals(len(s.decode('utf-8')), size)
+
+ def basic_encode_test(self, size, enc, c=u'.', expectedsize=None):
+ if expectedsize is None:
+ expectedsize = size
+
+ s = c * size
+ self.assertEquals(len(s.encode(enc)), expectedsize)
@bigmemtest(minsize=_2G + 2, memuse=3)
def test_encode(self, size):
- s = u'.' * size
- self.assertEquals(len(s.encode('utf-8')), size)
+ return self.basic_encode_test(size, 'utf-8')
+
+ @precisionbigmemtest(size=_4G / 6 + 2, memuse=2)
+ def test_encode_raw_unicode_escape(self, size):
+ try:
+ return self.basic_encode_test(size, 'raw_unicode_escape')
+ except MemoryError:
+ pass # acceptable on 32-bit
+
+ @precisionbigmemtest(size=_4G / 5 + 70, memuse=3)
+ def test_encode_utf7(self, size):
+ try:
+ return self.basic_encode_test(size, 'utf7')
+ except MemoryError:
+ pass # acceptable on 32-bit
+
+ @precisionbigmemtest(size=_2G-1, memuse=2)
+ def test_decodeascii(self, size):
+ return self.basic_encode_test(size, 'ascii', c='A')
+
+ @precisionbigmemtest(size=_4G / 5, memuse=6+2)
+ def test_unicode_repr_oflw(self, size):
+ try:
+ s = u"\uAAAA"*size
+ r = repr(s)
+ except MemoryError:
+ pass # acceptable on 32-bit
+ else:
+ self.failUnless(s == eval(r))
@bigmemtest(minsize=_2G, memuse=2)
def test_endswith(self, size):
@@ -458,7 +508,12 @@
self.assertEquals(s[-1], "'")
self.assertEquals(s.count('\\'), size)
self.assertEquals(s.count('0'), size * 2)
-
+
+ @bigmemtest(minsize=2**32 / 5, memuse=6+2)
+ def test_unicode_repr(self, size):
+ s = u"\uAAAA" * size
+ self.failUnless(len(repr(s)) > size)
+
# This test is meaningful even with size < 2G, as long as the
# doubled string is > 2G (but it tests more if both are > 2G :)
@bigmemtest(minsize=_1G + 2, memuse=3)
@@ -642,6 +697,35 @@
def test_repeat_large(self, size):
return self.basic_test_repeat(size)
+ @bigmemtest(minsize=_1G - 1, memuse=12)
+ def test_repeat_large_2(self, size):
+ return self.basic_test_repeat(size)
+
+ @precisionbigmemtest(size=_1G - 1, memuse=9)
+ def test_from_2G_generator(self, size):
+ try:
+ t = tuple(xrange(size))
+ except MemoryError:
+ pass # acceptable on 32-bit
+ else:
+ count = 0
+ for item in t:
+ self.assertEquals(item, count)
+ count += 1
+ self.assertEquals(count, size)
+
+ @precisionbigmemtest(size=_1G - 25, memuse=9)
+ def test_from_almost_2G_generator(self, size):
+ try:
+ t = tuple(xrange(size))
+ count = 0
+ for item in t:
+ self.assertEquals(item, count)
+ count += 1
+ self.assertEquals(count, size)
+ except MemoryError:
+ pass # acceptable, expected on 32-bit
+
# Like test_concat, split in two.
def basic_test_repr(self, size):
t = (0,) * size
@@ -957,9 +1041,35 @@
self.assertEquals(l[:10], [1] * 10)
self.assertEquals(l[-10:], [5] * 10)
+class BufferTest(unittest.TestCase):
+
+ @precisionbigmemtest(size=_1G, memuse=4)
+ def test_repeat(self, size):
+ try:
+ b = buffer("AAAA")*size
+ except MemoryError:
+ pass # acceptable on 32-bit
+ else:
+ count = 0
+ for c in b:
+ self.assertEquals(c, 'A')
+ count += 1
+ self.assertEquals(count, size*4)
+
def test_main():
- test_support.run_unittest(StrTest, TupleTest, ListTest)
+ test_support.run_unittest(StrTest, TupleTest, ListTest, BufferTest)
+# Expected failures (crashers)
+# del StrTest.test_center_unicode
+del StrTest.test_decodeascii
+# del StrTest.test_encode_utf32
+# del StrTest.test_encode_utf7
+# del StrTest.test_encode_raw_unicode_escape
+#
+# del TupleTest.test_from_2G_generator
+#
+# del BufferTest.test_repeat
+
if __name__ == '__main__':
if len(sys.argv) > 1:
test_support.set_memlimit(sys.argv[1])
Index: Lib/test/test_support.py
===================================================================
--- Lib/test/test_support.py (revision 65261)
+++ Lib/test/test_support.py (working copy)
@@ -33,6 +33,7 @@
use_resources = None # Flag set to [] by regrtest.py
max_memuse = 0 # Disable bigmem tests (they will still be run with
# small sizes, to make sure they work.)
+real_max_memuse = 0
# _original_stdout is meant to hold stdout at the time regrtest began.
# This may be "the real" stdout, or IDLE's emulation of stdout, or whatever.
@@ -323,6 +324,7 @@
_1M = 1024*1024
_1G = 1024 * _1M
_2G = 2 * _1G
+_4G = 4 * _1G
# Hack to get at the maximum value an internal index can take.
class _Dummy:
@@ -333,6 +335,7 @@
def set_memlimit(limit):
import re
global max_memuse
+ global real_max_memuse
sizes = {
'k': 1024,
'm': _1M,
@@ -344,6 +347,7 @@
if m is None:
raise ValueError('Invalid memory limit %r' % (limit,))
memlimit = int(float(m.group(1)) * sizes[m.group(3).lower()])
+ real_max_memuse = memlimit
if memlimit > MAX_Py_ssize_t:
memlimit = MAX_Py_ssize_t
if memlimit < _2G - 1:
@@ -389,6 +393,27 @@
return wrapper
return decorator
+def precisionbigmemtest(size, memuse, overhead=5*_1M):
+ def decorator(f):
+ def wrapper(self):
+ if not real_max_memuse:
+ maxsize = 5147
+ else:
+ maxsize = size
+
+ if real_max_memuse and real_max_memuse < maxsize * memuse:
+ if verbose:
+ sys.stderr.write("Skipping %s because of memory "
+ "constraint\n" % (f.__name__,))
+ return
+
+ return f(self, maxsize)
+ wrapper.size = size
+ wrapper.memuse = memuse
+ wrapper.overhead = overhead
+ return wrapper
+ return decorator
+
def bigaddrspacetest(f):
"""Decorator for tests that fill the address space."""
def wrapper(self):
Index: Modules/mmapmodule.c
===================================================================
--- Modules/mmapmodule.c (revision 65261)
+++ Modules/mmapmodule.c (working copy)
@@ -223,7 +223,7 @@
return(NULL);
/* silently 'adjust' out-of-range requests */
- if ((self->pos + num_bytes) > self->size) {
+ if (num_bytes > self->size - self->pos) {
num_bytes -= (self->pos+num_bytes) - self->size;
}
result = Py_BuildValue("s#", self->data+self->pos, num_bytes);
Index: Modules/stropmodule.c
===================================================================
--- Modules/stropmodule.c (revision 65261)
+++ Modules/stropmodule.c (working copy)
@@ -216,6 +216,13 @@
return NULL;
}
slen = PyString_GET_SIZE(item);
+ if (slen > PY_SSIZE_T_MAX - reslen ||
+ seplen > PY_SSIZE_T_MAX - reslen - seplen) {
+ PyErr_SetString(PyExc_OverflowError,
+ "input too long");
+ Py_DECREF(res);
+ return NULL;
+ }
while (reslen + slen + seplen >= sz) {
if (_PyString_Resize(&res, sz * 2) < 0)
return NULL;
@@ -253,6 +260,14 @@
return NULL;
}
slen = PyString_GET_SIZE(item);
+ if (slen > PY_SSIZE_T_MAX - reslen ||
+ seplen > PY_SSIZE_T_MAX - reslen - seplen) {
+ PyErr_SetString(PyExc_OverflowError,
+ "input too long");
+ Py_DECREF(res);
+ Py_XDECREF(item);
+ return NULL;
+ }
while (reslen + slen + seplen >= sz) {
if (_PyString_Resize(&res, sz * 2) < 0) {
Py_DECREF(item);
Index: Modules/gcmodule.c
===================================================================
--- Modules/gcmodule.c (revision 65261)
+++ Modules/gcmodule.c (working copy)
@@ -1318,7 +1318,10 @@
_PyObject_GC_Malloc(size_t basicsize)
{
PyObject *op;
- PyGC_Head *g = (PyGC_Head *)PyObject_MALLOC(
+ PyGC_Head *g;
+ if (basicsize > PY_SSIZE_T_MAX - sizeof(PyGC_Head))
+ return PyErr_NoMemory();
+ g = (PyGC_Head *)PyObject_MALLOC(
sizeof(PyGC_Head) + basicsize);
if (g == NULL)
return PyErr_NoMemory();
@@ -1361,6 +1364,8 @@
{
const size_t basicsize = _PyObject_VAR_SIZE(op->ob_type, nitems);
PyGC_Head *g = AS_GC(op);
+ if (basicsize > PY_SSIZE_T_MAX - sizeof(PyGC_Head))
+ return (PyVarObject *)PyErr_NoMemory();
g = (PyGC_Head *)PyObject_REALLOC(g, sizeof(PyGC_Head) + basicsize);
if (g == NULL)
return (PyVarObject *)PyErr_NoMemory();

151
python-2.5.2-CVE-2008-2316-hashlib.patch Normal file
View File

@ -0,0 +1,151 @@
Index: Lib/test/test_hashlib.py
================================================================================
--- Lib/test/test_hashlib.py
+++ Lib/test/test_hashlib.py
@@ -9,7 +9,7 @@
import hashlib
import unittest
from test import test_support
-
+from test.test_support import _4G, precisionbigmemtest
def hexstr(s):
import string
@@ -55,7 +55,6 @@
m2.update(aas + bees + cees)
self.assertEqual(m1.digest(), m2.digest())
-
def check(self, name, data, digest):
# test the direct constructors
computed = getattr(hashlib, name)(data).hexdigest()
@@ -74,7 +73,22 @@
def test_case_md5_2(self):
self.check('md5', 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',
'd174ab98d277d9f5a5611c2c9f419d9f')
-
+
+ @precisionbigmemtest(size=_4G + 5, memuse=1)
+ def test_case_md5_huge(self, size):
+ if size == _4G + 5:
+ try:
+ self.check('md5', 'A'*size, 'c9af2dff37468ce5dfee8f2cfc0a9c6d')
+ except OverflowError:
+ pass # 32-bit arch
+
+ @precisionbigmemtest(size=_4G - 1, memuse=1)
+ def test_case_md5_uintmax(self, size):
+ if size == _4G - 1:
+ try:
+ self.check('md5', 'A'*size, '28138d306ff1b8281f1a9067e1a1a2b3')
+ except OverflowError:
+ pass # 32-bit arch
# use the three examples from Federal Information Processing Standards
# Publication 180-1, Secure Hash Standard, 1995 April 17
--- Modules/_hashopenssl.c
+++ Modules/_hashopenssl.c
@@ -19,6 +19,8 @@
/* EVP is the preferred interface to hashing in OpenSSL */
#include <openssl/evp.h>
+#define MUNCH_SIZE INT_MAX
+
#ifndef HASH_OBJ_CONSTRUCTOR
#define HASH_OBJ_CONSTRUCTOR 0
@@ -164,9 +166,18 @@
if (!PyArg_ParseTuple(args, "s#:update", &cp, &len))
return NULL;
+ if (len > 0 && len <= MUNCH_SIZE) {
EVP_DigestUpdate(&self->ctx, cp, Py_SAFE_DOWNCAST(len, Py_ssize_t,
unsigned int));
-
+ } else {
+ Py_ssize_t offset = 0;
+ while (len) {
+ unsigned int process = len > MUNCH_SIZE ? MUNCH_SIZE : len;
+ EVP_DigestUpdate(&self->ctx, cp + offset, process);
+ len -= process;
+ offset += process;
+ }
+ }
Py_INCREF(Py_None);
return Py_None;
}
@@ -255,10 +266,21 @@
self->name = name_obj;
Py_INCREF(self->name);
- if (cp && len)
+ if (cp && len) {
+ if (len > 0 && len <= MUNCH_SIZE) {
EVP_DigestUpdate(&self->ctx, cp, Py_SAFE_DOWNCAST(len, Py_ssize_t,
unsigned int));
-
+ } else {
+ Py_ssize_t offset = 0;
+ while (len) {
+ unsigned int process = len > MUNCH_SIZE ? MUNCH_SIZE : len;
+ EVP_DigestUpdate(&self->ctx, cp + offset, process);
+ len -= process;
+ offset += process;
+ }
+ }
+ }
+
return 0;
}
#endif
@@ -328,7 +350,7 @@
static PyObject *
EVPnew(PyObject *name_obj,
const EVP_MD *digest, const EVP_MD_CTX *initial_ctx,
- const unsigned char *cp, unsigned int len)
+ const unsigned char *cp, Py_ssize_t len)
{
EVPobject *self;
@@ -346,8 +368,20 @@
EVP_DigestInit(&self->ctx, digest);
}
- if (cp && len)
- EVP_DigestUpdate(&self->ctx, cp, len);
+ if (cp && len) {
+ if (len > 0 && len <= MUNCH_SIZE) {
+ EVP_DigestUpdate(&self->ctx, cp, Py_SAFE_DOWNCAST(len, Py_ssize_t,
+ unsigned int));
+ } else {
+ Py_ssize_t offset = 0;
+ while (len) {
+ unsigned int process = len > MUNCH_SIZE ? MUNCH_SIZE : len;
+ EVP_DigestUpdate(&self->ctx, cp + offset, process);
+ len -= process;
+ offset += process;
+ }
+ }
+ }
return (PyObject *)self;
}
@@ -384,8 +418,7 @@
digest = EVP_get_digestbyname(name);
- return EVPnew(name_obj, digest, NULL, cp, Py_SAFE_DOWNCAST(len, Py_ssize_t,
- unsigned int));
+ return EVPnew(name_obj, digest, NULL, cp, len);
}
/*
@@ -410,7 +443,7 @@
CONST_ ## NAME ## _name_obj, \
NULL, \
CONST_new_ ## NAME ## _ctx_p, \
- cp, Py_SAFE_DOWNCAST(len, Py_ssize_t, unsigned int)); \
+ cp, len); \
}
/* a PyMethodDef structure for the constructor */

154
python-2.5.2-CVE-2008-3142-pymem-resize.patch Normal file
View File

@ -0,0 +1,154 @@
Index: Include/pymem.h
================================================================================
--- Include/pymem.h
+++ Include/pymem.h
@@ -67,8 +67,12 @@
for malloc(0), which would be treated as an error. Some platforms
would return a pointer with no memory behind it, which would break
pymalloc. To solve these problems, allocate an extra byte. */
-#define PyMem_MALLOC(n) malloc((n) ? (n) : 1)
-#define PyMem_REALLOC(p, n) realloc((p), (n) ? (n) : 1)
+/* Returns NULL to indicate error if a negative size or size larger than
+ Py_ssize_t can represent is supplied. Helps prevents security holes. */
+#define PyMem_MALLOC(n) (((n) < 0 || (n) > PY_SSIZE_T_MAX) ? NULL \
+ : malloc((n) ? (n) : 1))
+#define PyMem_REALLOC(p, n) (((n) < 0 || (n) > PY_SSIZE_T_MAX) ? NULL \
+ : realloc((p), (n) ? (n) : 1))
#define PyMem_FREE free
#endif /* PYMALLOC_DEBUG */
@@ -77,24 +81,31 @@
* Type-oriented memory interface
* ==============================
*
- * These are carried along for historical reasons. There's rarely a good
- * reason to use them anymore (you can just as easily do the multiply and
- * cast yourself).
+ * Allocate memory for n objects of the given type. Returns a new pointer
+ * or NULL if the request was too large or memory allocation failed. Use
+ * these macros rather than doing the multiplication yourself so that proper
+ * overflow checking is always done.
*/
#define PyMem_New(type, n) \
- ( assert((n) <= PY_SIZE_MAX / sizeof(type)) , \
+ ( ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
( (type *) PyMem_Malloc((n) * sizeof(type)) ) )
#define PyMem_NEW(type, n) \
- ( assert((n) <= PY_SIZE_MAX / sizeof(type)) , \
+ ( ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
( (type *) PyMem_MALLOC((n) * sizeof(type)) ) )
+/*
+ * The value of (p) is always clobbered by this macro regardless of success.
+ * The caller MUST check if (p) is NULL afterwards and deal with the memory
+ * error if so. This means the original value of (p) MUST be saved for the
+ * caller's memory error handler to not lose track of it.
+ */
#define PyMem_Resize(p, type, n) \
- ( assert((n) <= PY_SIZE_MAX / sizeof(type)) , \
- ( (p) = (type *) PyMem_Realloc((p), (n) * sizeof(type)) ) )
+ ( (p) = ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
+ (type *) PyMem_Realloc((p), (n) * sizeof(type)) )
#define PyMem_RESIZE(p, type, n) \
- ( assert((n) <= PY_SIZE_MAX / sizeof(type)) , \
- ( (p) = (type *) PyMem_REALLOC((p), (n) * sizeof(type)) ) )
+ ( (p) = ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
+ (type *) PyMem_REALLOC((p), (n) * sizeof(type)) )
/* PyMem{Del,DEL} are left over from ancient days, and shouldn't be used
* anymore. They're just confusing aliases for PyMem_{Free,FREE} now.
--- Modules/almodule.c
+++ Modules/almodule.c
@@ -1633,9 +1633,11 @@
if (nvals < 0)
goto cleanup;
if (nvals > setsize) {
+ ALvalue *old_return_set = return_set;
setsize = nvals;
PyMem_RESIZE(return_set, ALvalue, setsize);
if (return_set == NULL) {
+ return_set = old_return_set;
PyErr_NoMemory();
goto cleanup;
}
--- Modules/arraymodule.c
+++ Modules/arraymodule.c
@@ -816,6 +816,7 @@
array_do_extend(arrayobject *self, PyObject *bb)
{
Py_ssize_t size;
+ char *old_item;
if (!array_Check(bb))
return array_iter_extend(self, bb);
@@ -831,8 +832,10 @@
return -1;
}
size = self->ob_size + b->ob_size;
+ old_item = self->ob_item;
PyMem_RESIZE(self->ob_item, char, size*self->ob_descr->itemsize);
if (self->ob_item == NULL) {
+ self->ob_item = old_item;
PyObject_Del(self);
PyErr_NoMemory();
return -1;
@@ -886,7 +889,7 @@
if (size > PY_SSIZE_T_MAX / n) {
return PyErr_NoMemory();
}
- PyMem_Resize(items, char, n * size);
+ PyMem_RESIZE(items, char, n * size);
if (items == NULL)
return PyErr_NoMemory();
p = items;
--- Modules/selectmodule.c
+++ Modules/selectmodule.c
@@ -349,10 +349,12 @@
{
Py_ssize_t i, pos;
PyObject *key, *value;
+ struct pollfd *old_ufds = self->ufds;
self->ufd_len = PyDict_Size(self->dict);
- PyMem_Resize(self->ufds, struct pollfd, self->ufd_len);
+ PyMem_RESIZE(self->ufds, struct pollfd, self->ufd_len);
if (self->ufds == NULL) {
+ self->ufds = old_ufds;
PyErr_NoMemory();
return 0;
}
--- Objects/obmalloc.c
+++ Objects/obmalloc.c
@@ -727,6 +727,15 @@
uint size;
/*
+ * Limit ourselves to PY_SSIZE_T_MAX bytes to prevent security holes.
+ * Most python internals blindly use a signed Py_ssize_t to track
+ * things without checking for overflows or negatives.
+ * As size_t is unsigned, checking for nbytes < 0 is not required.
+ */
+ if (nbytes > PY_SSIZE_T_MAX)
+ return NULL;
+
+ /*
* This implicitly redirects malloc(0).
*/
if ((nbytes - 1) < SMALL_REQUEST_THRESHOLD) {
@@ -1130,6 +1139,15 @@
if (p == NULL)
return PyObject_Malloc(nbytes);
+ /*
+ * Limit ourselves to PY_SSIZE_T_MAX bytes to prevent security holes.
+ * Most python internals blindly use a signed Py_ssize_t to track
+ * things without checking for overflows or negatives.
+ * As size_t is unsigned, checking for nbytes < 0 is not required.
+ */
+ if (nbytes > PY_SSIZE_T_MAX)
+ return NULL;
+
pool = POOL_ADDR(p);
if (Py_ADDRESS_IN_RANGE(p, pool)) {
/* We're in charge of this block */

57
python-2.5.2-CVE-2008-3144-snprintf-over-underflow.patch Normal file
View File

@ -0,0 +1,57 @@
Index: Python/mysnprintf.c
===================================================================
--- Python/mysnprintf.c (revision 63882)
+++ Python/mysnprintf.c (revision 63883)
@@ -54,18 +54,28 @@
PyOS_vsnprintf(char *str, size_t size, const char *format, va_list va)
{
int len; /* # bytes written, excluding \0 */
-#ifndef HAVE_SNPRINTF
+#ifdef HAVE_SNPRINTF
+#define _PyOS_vsnprintf_EXTRA_SPACE 1
+#else
+#define _PyOS_vsnprintf_EXTRA_SPACE 512
char *buffer;
#endif
assert(str != NULL);
assert(size > 0);
assert(format != NULL);
+ /* We take a size_t as input but return an int. Sanity check
+ * our input so that it won't cause an overflow in the
+ * vsnprintf return value or the buffer malloc size. */
+ if (size > INT_MAX - _PyOS_vsnprintf_EXTRA_SPACE) {
+ len = -666;
+ goto Done;
+ }
#ifdef HAVE_SNPRINTF
len = vsnprintf(str, size, format, va);
#else
/* Emulate it. */
- buffer = PyMem_MALLOC(size + 512);
+ buffer = PyMem_MALLOC(size + _PyOS_vsnprintf_EXTRA_SPACE);
if (buffer == NULL) {
len = -666;
goto Done;
@@ -75,7 +85,7 @@
if (len < 0)
/* ignore the error */;
- else if ((size_t)len >= size + 512)
+ else if ((size_t)len >= size + _PyOS_vsnprintf_EXTRA_SPACE)
Py_FatalError("Buffer overflow in PyOS_snprintf/PyOS_vsnprintf");
else {
@@ -86,8 +96,10 @@
str[to_copy] = '\0';
}
PyMem_FREE(buffer);
+#endif
Done:
-#endif
- str[size-1] = '\0';
+ if (size > 0)
+ str[size-1] = '\0';
return len;
+#undef _PyOS_vsnprintf_EXTRA_SPACE
}

219
python-2.5.2-expandtabs.patch Normal file
View File

@ -0,0 +1,219 @@
Index: Objects/unicodeobject.c
===================================================================
--- Objects/unicodeobject.c (revision 61348)
+++ Objects/unicodeobject.c (revision 61349)
@@ -5689,7 +5689,8 @@
Py_UNICODE *e;
Py_UNICODE *p;
Py_UNICODE *q;
- Py_ssize_t i, j, old_j;
+ Py_UNICODE *qe;
+ Py_ssize_t i, j, incr;
PyUnicodeObject *u;
int tabsize = 8;
@@ -5697,63 +5698,70 @@
return NULL;
/* First pass: determine size of output string */
- i = j = old_j = 0;
- e = self->str + self->length;
+ i = 0; /* chars up to and including most recent \n or \r */
+ j = 0; /* chars since most recent \n or \r (use in tab calculations) */
+ e = self->str + self->length; /* end of input */
for (p = self->str; p < e; p++)
if (*p == '\t') {
if (tabsize > 0) {
- j += tabsize - (j % tabsize);
- if (old_j > j) {
- PyErr_SetString(PyExc_OverflowError,
- "new string is too long");
- return NULL;
- }
- old_j = j;
- }
+ incr = tabsize - (j % tabsize); /* cannot overflow */
+ if (j > PY_SSIZE_T_MAX - incr)
+ goto overflow1;
+ j += incr;
+ }
}
else {
+ if (j > PY_SSIZE_T_MAX - 1)
+ goto overflow1;
j++;
if (*p == '\n' || *p == '\r') {
+ if (i > PY_SSIZE_T_MAX - j)
+ goto overflow1;
i += j;
- old_j = j = 0;
- if (i < 0) {
- PyErr_SetString(PyExc_OverflowError,
- "new string is too long");
- return NULL;
- }
+ j = 0;
}
}
- if ((i + j) < 0) {
- PyErr_SetString(PyExc_OverflowError, "new string is too long");
- return NULL;
- }
+ if (i > PY_SSIZE_T_MAX - j)
+ goto overflow1;
/* Second pass: create output string and fill it */
u = _PyUnicode_New(i + j);
if (!u)
return NULL;
- j = 0;
- q = u->str;
+ j = 0; /* same as in first pass */
+ q = u->str; /* next output char */
+ qe = u->str + u->length; /* end of output */
for (p = self->str; p < e; p++)
if (*p == '\t') {
if (tabsize > 0) {
i = tabsize - (j % tabsize);
j += i;
- while (i--)
+ while (i--) {
+ if (q >= qe)
+ goto overflow2;
*q++ = ' ';
+ }
}
}
else {
+ if (q >= qe)
+ goto overflow2;
+ *q++ = *p;
j++;
- *q++ = *p;
if (*p == '\n' || *p == '\r')
j = 0;
}
return (PyObject*) u;
+
+ overflow2:
+ Py_DECREF(u);
+ overflow1:
+ PyErr_SetString(PyExc_OverflowError, "new string is too long");
+ return NULL;
}
PyDoc_STRVAR(find__doc__,
Index: Objects/stringobject.c
===================================================================
--- Objects/stringobject.c (revision 61348)
+++ Objects/stringobject.c (revision 61349)
@@ -3299,9 +3299,9 @@
static PyObject*
string_expandtabs(PyStringObject *self, PyObject *args)
{
- const char *e, *p;
+ const char *e, *p, *qe;
char *q;
- Py_ssize_t i, j, old_j;
+ Py_ssize_t i, j, incr;
PyObject *u;
int tabsize = 8;
@@ -3309,63 +3309,70 @@
return NULL;
/* First pass: determine size of output string */
- i = j = old_j = 0;
- e = PyString_AS_STRING(self) + PyString_GET_SIZE(self);
+ i = 0; /* chars up to and including most recent \n or \r */
+ j = 0; /* chars since most recent \n or \r (use in tab calculations) */
+ e = PyString_AS_STRING(self) + PyString_GET_SIZE(self); /* end of input */
for (p = PyString_AS_STRING(self); p < e; p++)
if (*p == '\t') {
if (tabsize > 0) {
- j += tabsize - (j % tabsize);
- if (old_j > j) {
- PyErr_SetString(PyExc_OverflowError,
- "new string is too long");
- return NULL;
- }
- old_j = j;
+ incr = tabsize - (j % tabsize);
+ if (j > PY_SSIZE_T_MAX - incr)
+ goto overflow1;
+ j += incr;
}
}
else {
+ if (j > PY_SSIZE_T_MAX - 1)
+ goto overflow1;
j++;
if (*p == '\n' || *p == '\r') {
+ if (i > PY_SSIZE_T_MAX - j)
+ goto overflow1;
i += j;
- old_j = j = 0;
- if (i < 0) {
- PyErr_SetString(PyExc_OverflowError,
- "new string is too long");
- return NULL;
- }
+ j = 0;
}
}
- if ((i + j) < 0) {
- PyErr_SetString(PyExc_OverflowError, "new string is too long");
- return NULL;
- }
+ if (i > PY_SSIZE_T_MAX - j)
+ goto overflow1;
/* Second pass: create output string and fill it */
u = PyString_FromStringAndSize(NULL, i + j);
if (!u)
return NULL;
- j = 0;
- q = PyString_AS_STRING(u);
+ j = 0; /* same as in first pass */
+ q = PyString_AS_STRING(u); /* next output char */
+ qe = PyString_AS_STRING(u) + PyString_GET_SIZE(u); /* end of output */
for (p = PyString_AS_STRING(self); p < e; p++)
if (*p == '\t') {
if (tabsize > 0) {
i = tabsize - (j % tabsize);
j += i;
- while (i--)
+ while (i--) {
+ if (q >= qe)
+ goto overflow2;
*q++ = ' ';
+ }
}
}
else {
+ if (q >= qe)
+ goto overflow2;
+ *q++ = *p;
j++;
- *q++ = *p;
if (*p == '\n' || *p == '\r')
j = 0;
}
return u;
+
+ overflow2:
+ Py_DECREF(u);
+ overflow1:
+ PyErr_SetString(PyExc_OverflowError, "new string is too long");
+ return NULL;
}
Py_LOCAL_INLINE(PyObject *)

13
python-doc.spec
View File

@ -2,9 +2,16 @@
# spec file for package python-doc (Version 2.5.1)
#
# Copyright (c) 2008 SUSE LINUX Products GmbH, Nuernberg, Germany.
# This file and all modifications and additions to the pristine
# package are under the same license as the package itself.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
# upon. The license for this file, and modifications and additions to the
# file, is the same license as for the pristine package itself (unless the
# license for the pristine package is not an Open Source License, in which
# case the license is the MIT License). An "Open Source License" is a
# license that conforms to the Open Source Definition (Version 1.9)
# published by the Open Source Initiative.
# Please submit bugfixes or comments via http://bugs.opensuse.org/
#
@ -17,7 +24,7 @@ Group: Development/Languages/Python
BuildRoot: %{_tmppath}/%{name}-%{version}-build
Summary: Additional Package Documentation for Python.
Version: 2.5.1
Release: 81
Release: 91
%define pyver 2.5.2
BuildArch: noarch
%define tarname Python-%{pyver}

11
python.changes
View File

@ -1,3 +1,14 @@
-------------------------------------------------------------------
Wed Jul 30 20:35:02 CEST 2008 - matejcik@suse.cz
- security fixes for issues mentioned in bnc#406051:
* CVE-2008-2315 - multiple integer overflows in basic types
* CVE-2008-2316 - partial hashing of huge data with hashlib
* CVE-2008-3142 - multiple buffer oveflows in unicode processing
* CVE-2008-3144 - possible integer over/underflow in mysnprintf
* buffer overflows in expandtabs() method (afaik no CVE assigned)
- also mentioned CVE-2008-3143 is already fixed in python 2.5.2
-------------------------------------------------------------------
Mon Jun 30 15:38:17 CEST 2008 - schwab@suse.de

31
python.spec
View File

@ -2,9 +2,16 @@
# spec file for package python (Version 2.5.2)
#
# Copyright (c) 2008 SUSE LINUX Products GmbH, Nuernberg, Germany.
# This file and all modifications and additions to the pristine
# package are under the same license as the package itself.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
# upon. The license for this file, and modifications and additions to the
# file, is the same license as for the pristine package itself (unless the
# license for the pristine package is not an Open Source License, in which
# case the license is the MIT License). An "Open Source License" is a
# license that conforms to the Open Source Definition (Version 1.9)
# published by the Open Source Initiative.
# Please submit bugfixes or comments via http://bugs.opensuse.org/
#
@ -20,7 +27,7 @@ AutoReqProv: on
Obsoletes: python-nothreads python21 python-elementtree python-sqlite
Summary: Python Interpreter
Version: 2.5.2
Release: 31
Release: 43
%define tarname Python-%{version}
Source0: %{tarname}.tar.bz2
Source6: README.SUSE
@ -44,6 +51,11 @@ Patch32: disable-dns-test.diff
Patch33: python-2.5.2-from-string-and-size.patch
Patch34: python-2.5.2-docdirs.patch
Patch35: python-2.5.2-configure.patch
Patch36: python-2.5.2-expandtabs.patch
Patch37: python-2.5.2-CVE-2008-3142-pymem-resize.patch
Patch38: python-2.5.2-CVE-2008-2315-int-overflows.patch
Patch39: python-2.5.2-CVE-2008-2316-hashlib.patch
Patch40: python-2.5.2-CVE-2008-3144-snprintf-over-underflow.patch
BuildRoot: %{_tmppath}/%{name}-%{version}-build
%define python_version %(echo %{version} | head -c 3)
%define idle_name idle
@ -218,6 +230,11 @@ Python2.x, it is part of the core Python distribution.
%patch33 -p2
%patch34
%patch35
%patch36
%patch37
%patch38
%patch39
%patch40
# some cleanup
find . -name .cvsignore -type f -print0 | xargs -0 rm -f
find . -name CVS -type d -print0 | xargs -0 rm -rf
@ -491,6 +508,14 @@ rm -rf $RPM_BUILD_ROOT
%{_bindir}/python2
%changelog
* Wed Jul 30 2008 matejcik@suse.cz
- security fixes for issues mentioned in bnc#406051:
* CVE-2008-2315 - multiple integer overflows in basic types
* CVE-2008-2316 - partial hashing of huge data with hashlib
* CVE-2008-3142 - multiple buffer oveflows in unicode processing
* CVE-2008-3144 - possible integer over/underflow in mysnprintf
* buffer overflows in expandtabs() method (afaik no CVE assigned)
- also mentioned CVE-2008-3143 is already fixed in python 2.5.2
* Mon Jun 30 2008 schwab@suse.de
- Work around autoheader bug.
* Fri Jun 13 2008 schwab@suse.de