forked from pool/glibc
Andreas Schwab
746e16d2b9
- Update to glibc 2.17.90 85891acadf1b:
* CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
has been fixed by disabling the use of pt_chown (Bugzilla #15755).
Distributions can re-enable building and using pt_chown via the new configure
option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
considerable security risks and should only be used if the distribution
understands and accepts the risks.
* CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
#15078).
* CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
fixed (Bugzilla #15330).
* Add support for calling C++11 thread_local object destructors on thread
and program exit. This needs compiler support for offloading C++11
destructor calls to glibc.
* Improved worst case performance of libm functions with double inputs and
output.
* Support for priority inherited mutexes in pthread condition variables on
non-x86 architectures.
* Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
* Optimized string functions for ARM. Implemented by Will Newton and
Richard Henderson.
* Added a benchmark framework to track performance of functions in glibc.
* New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
It is based on draft TS 18661 and currently enabled as a GNU extension.
* On Linux, the clock function now uses the clock_gettime system call
for improved precision, rather than old times system call.
* Added new API functions pthread_getattr_default_np and
pthread_setattr_default_np to get and set the default pthread
attributes of a process.
* Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
OBS-URL: https://build.opensuse.org/request/show/186119
OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=304
159 lines
3.5 KiB
Diff
159 lines
3.5 KiB
Diff
Index: glibc-2.17.90/sunrpc/bindrsvprt.c
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===================================================================
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--- glibc-2.17.90.orig/sunrpc/bindrsvprt.c
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+++ glibc-2.17.90/sunrpc/bindrsvprt.c
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@@ -29,6 +29,9 @@
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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+#include <stdio.h>
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+#include <ctype.h>
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+#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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@@ -42,6 +45,93 @@
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*/
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__libc_lock_define_initialized (static, lock);
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+#define STARTPORT 600
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+#define LOWPORT 512
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+#define ENDPORT (IPPORT_RESERVED - 1)
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+#define NPORTS (ENDPORT - STARTPORT + 1)
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+
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+/* Read the file /etc/rpc.blacklisted, so that we don't bind to these
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+ ports. */
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+
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+static int blacklist_read;
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+static int *list;
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+static int list_size = 0;
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+
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+static void
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+load_blacklist (void)
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+{
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+ FILE *fp;
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+ char *buf = NULL;
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+ size_t buflen = 0;
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+ int size = 0, ptr = 0;
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+
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+ __libc_lock_lock (lock);
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+ if (blacklist_read)
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+ goto unlock;
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+ blacklist_read = 1;
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+
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+ fp = fopen ("/etc/bindresvport.blacklist", "r");
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+ if (fp == NULL)
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+ goto unlock;
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+
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+ while (!feof_unlocked (fp))
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+ {
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+ unsigned long port;
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+ char *tmp, *cp;
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+ ssize_t n = __getline (&buf, &buflen, fp);
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+ if (n < 1)
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+ break;
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+
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+ cp = buf;
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+ /* Remove comments. */
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+ tmp = strchr (cp, '#');
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+ if (tmp)
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+ *tmp = '\0';
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+ /* Remove spaces and tabs. */
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+ while (isspace ((unsigned char) *cp))
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+ ++cp;
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+ /* Ignore empty lines. */
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+ if (*cp == '\0')
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+ continue;
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+ if (cp[strlen (cp) - 1] == '\n')
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+ cp[strlen (cp) - 1] = '\0';
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+
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+ port = strtoul (cp, &tmp, 0);
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+ while (isspace ((unsigned char) *tmp))
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+ ++tmp;
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+ if (*tmp != '\0' || (port == ULONG_MAX && errno == ERANGE))
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+ continue;
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+
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+ /* Don't bother with out-of-range ports. */
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+ if (port < LOWPORT || port > ENDPORT)
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+ continue;
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+
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+ if (ptr >= size)
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+ {
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+ size += 10;
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+ int *new_list = realloc (list, size * sizeof (int));
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+ if (new_list == NULL)
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+ {
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+ free (list);
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+ list = NULL;
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+ free (buf);
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+ goto unlock;
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+ }
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+ list = new_list;
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+ }
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+
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+ list[ptr++] = port;
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+ }
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+
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+ fclose (fp);
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+ free (buf);
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+ list_size = ptr;
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+
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+ unlock:
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+ __libc_lock_unlock (lock);
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+}
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+
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+
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/*
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* Bind a socket to a privileged IP port
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*/
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@@ -52,12 +142,11 @@ bindresvport (int sd, struct sockaddr_in
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struct sockaddr_in myaddr;
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int i;
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-#define STARTPORT 600
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-#define LOWPORT 512
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-#define ENDPORT (IPPORT_RESERVED - 1)
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-#define NPORTS (ENDPORT - STARTPORT + 1)
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static short startport = STARTPORT;
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+ if (!blacklist_read)
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+ load_blacklist ();
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+
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if (sin == (struct sockaddr_in *) 0)
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{
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sin = &myaddr;
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@@ -75,6 +164,7 @@ bindresvport (int sd, struct sockaddr_in
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port = (__getpid () % NPORTS) + STARTPORT;
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}
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+ __set_errno (EADDRINUSE);
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/* Initialize to make gcc happy. */
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int res = -1;
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@@ -86,12 +176,22 @@ bindresvport (int sd, struct sockaddr_in
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again:
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for (i = 0; i < nports; ++i)
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{
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- sin->sin_port = htons (port++);
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- if (port > endport)
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- port = startport;
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+ int j;
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+
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+ sin->sin_port = htons (port);
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+
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+ /* Check that this port is not blacklisted. */
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+ for (j = 0; j < list_size; j++)
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+ if (port == list[j])
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+ goto try_next_port;
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+
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res = __bind (sd, sin, sizeof (struct sockaddr_in));
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if (res >= 0 || errno != EADDRINUSE)
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break;
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+
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+ try_next_port:
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+ if (++port > endport)
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+ port = startport;
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}
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if (i == nports && startport != LOWPORT)
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