forked from pool/libXcursor
Accepting request 555663 from X11:XOrg
OBS-URL: https://build.opensuse.org/request/show/555663 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/libXcursor?expand=0&rev=11
This commit is contained in:
commit
c6fd617c13
@ -1,73 +0,0 @@
|
|||||||
From 77a4331570c660ebee77f19eb385911299948422 Mon Sep 17 00:00:00 2001
|
|
||||||
From: Stefan Dirsch <sndirsch@suse.de>
|
|
||||||
Date: Tue, 21 Nov 2017 16:50:56 +0100
|
|
||||||
Subject: [PATCH] Avoid heap overflows due to integer overflow + signedness
|
|
||||||
issue [CVE-2017-16612]
|
|
||||||
|
|
||||||
It is possible to trigger heap overflows due to an integer overflow
|
|
||||||
while parsing images and a signedness issue while parsing comments.
|
|
||||||
|
|
||||||
The integer overflow occurs because the chosen limit 0x10000 for
|
|
||||||
dimensions is too large for 32 bit systems, because each pixel takes
|
|
||||||
4 bytes. Properly chosen values allow an overflow which in turn will
|
|
||||||
lead to less allocated memory than needed for subsequent reads.
|
|
||||||
|
|
||||||
The signedness bug is triggered by reading the length of a comment
|
|
||||||
as unsigned int, but casting it to int when calling the function
|
|
||||||
XcursorCommentCreate. Turning length into a negative value allows the
|
|
||||||
check against XCURSOR_COMMENT_MAX_LEN to pass, and the following
|
|
||||||
addition of sizeof (XcursorComment) + 1 makes it possible to allocate
|
|
||||||
less memory than needed for subsequent reads.
|
|
||||||
|
|
||||||
Signed-off-by: Tobias Stoeckmann
|
|
||||||
---
|
|
||||||
src/file.c | 12 ++++++++++--
|
|
||||||
1 file changed, 10 insertions(+), 2 deletions(-)
|
|
||||||
|
|
||||||
diff --git a/src/file.c b/src/file.c
|
|
||||||
index 43163c2..da16277 100644
|
|
||||||
--- a/src/file.c
|
|
||||||
+++ b/src/file.c
|
|
||||||
@@ -29,6 +29,11 @@ XcursorImageCreate (int width, int height)
|
|
||||||
{
|
|
||||||
XcursorImage *image;
|
|
||||||
|
|
||||||
+ if (width < 0 || height < 0)
|
|
||||||
+ return NULL;
|
|
||||||
+ if (width > XCURSOR_IMAGE_MAX_SIZE || height > XCURSOR_IMAGE_MAX_SIZE)
|
|
||||||
+ return NULL;
|
|
||||||
+
|
|
||||||
image = malloc (sizeof (XcursorImage) +
|
|
||||||
width * height * sizeof (XcursorPixel));
|
|
||||||
if (!image)
|
|
||||||
@@ -101,7 +106,7 @@ XcursorCommentCreate (XcursorUInt comment_type, int length)
|
|
||||||
{
|
|
||||||
XcursorComment *comment;
|
|
||||||
|
|
||||||
- if (length > XCURSOR_COMMENT_MAX_LEN)
|
|
||||||
+ if (length < 0 || length > XCURSOR_COMMENT_MAX_LEN)
|
|
||||||
return NULL;
|
|
||||||
|
|
||||||
comment = malloc (sizeof (XcursorComment) + length + 1);
|
|
||||||
@@ -448,7 +453,8 @@ _XcursorReadImage (XcursorFile *file,
|
|
||||||
if (!_XcursorReadUInt (file, &head.delay))
|
|
||||||
return NULL;
|
|
||||||
/* sanity check data */
|
|
||||||
- if (head.width >= 0x10000 || head.height > 0x10000)
|
|
||||||
+ if (head.width > XCURSOR_IMAGE_MAX_SIZE ||
|
|
||||||
+ head.height > XCURSOR_IMAGE_MAX_SIZE)
|
|
||||||
return NULL;
|
|
||||||
if (head.width == 0 || head.height == 0)
|
|
||||||
return NULL;
|
|
||||||
@@ -457,6 +463,8 @@ _XcursorReadImage (XcursorFile *file,
|
|
||||||
|
|
||||||
/* Create the image and initialize it */
|
|
||||||
image = XcursorImageCreate (head.width, head.height);
|
|
||||||
+ if (image == NULL)
|
|
||||||
+ return NULL;
|
|
||||||
if (chunkHeader.version < image->version)
|
|
||||||
image->version = chunkHeader.version;
|
|
||||||
image->size = chunkHeader.subtype;
|
|
||||||
--
|
|
||||||
2.13.6
|
|
||||||
|
|
@ -1,3 +0,0 @@
|
|||||||
version https://git-lfs.github.com/spec/v1
|
|
||||||
oid sha256:9bc6acb21ca14da51bda5bc912c8955bc6e5e433f0ab00c5e8bef842596c33df
|
|
||||||
size 311896
|
|
3
libXcursor-1.1.15.tar.bz2
Normal file
3
libXcursor-1.1.15.tar.bz2
Normal file
@ -0,0 +1,3 @@
|
|||||||
|
version https://git-lfs.github.com/spec/v1
|
||||||
|
oid sha256:294e670dd37cd23995e69aae626629d4a2dfe5708851bbc13d032401b7a3df6b
|
||||||
|
size 331607
|
@ -1,3 +1,18 @@
|
|||||||
|
-------------------------------------------------------------------
|
||||||
|
Thu Dec 7 17:26:32 UTC 2017 - tobias.johannes.klausmann@mni.thm.de
|
||||||
|
|
||||||
|
- Update to version 1.1.15:
|
||||||
|
* configure: Drop AM_MAINTAINER_MODE
|
||||||
|
* autogen.sh: Honor NOCONFIGURE=1
|
||||||
|
* Use strdup() instead of malloc(strlen())+strcpy()
|
||||||
|
* Fix some clang integer sign/size mismatch warnings
|
||||||
|
* autogen.sh: use quoted string variables
|
||||||
|
* autogen: add default patch prefix
|
||||||
|
* autogen.sh: use exec instead of waiting for configure to finish
|
||||||
|
* Fix heap overflows when parsing malicious files. (CVE-2017-16612)
|
||||||
|
* Insufficient memory for terminating null of string in _XcursorThemeInherits
|
||||||
|
- Drop U_Avoid-heap-overflows-due-to-integer-overflow-signedn.patch
|
||||||
|
|
||||||
-------------------------------------------------------------------
|
-------------------------------------------------------------------
|
||||||
Tue Nov 28 19:08:11 UTC 2017 - sndirsch@suse.com
|
Tue Nov 28 19:08:11 UTC 2017 - sndirsch@suse.com
|
||||||
|
|
||||||
|
@ -18,7 +18,7 @@
|
|||||||
|
|
||||||
Name: libXcursor
|
Name: libXcursor
|
||||||
%define lname libXcursor1
|
%define lname libXcursor1
|
||||||
Version: 1.1.14
|
Version: 1.1.15
|
||||||
Release: 0
|
Release: 0
|
||||||
Summary: X Window System Cursor management library
|
Summary: X Window System Cursor management library
|
||||||
License: MIT
|
License: MIT
|
||||||
@ -29,7 +29,6 @@ Url: http://xorg.freedesktop.org/
|
|||||||
#Git-Web: http://cgit.freedesktop.org/xorg/lib/libXcursor/
|
#Git-Web: http://cgit.freedesktop.org/xorg/lib/libXcursor/
|
||||||
Source: http://xorg.freedesktop.org/releases/individual/lib/%{name}-%{version}.tar.bz2
|
Source: http://xorg.freedesktop.org/releases/individual/lib/%{name}-%{version}.tar.bz2
|
||||||
Source1: baselibs.conf
|
Source1: baselibs.conf
|
||||||
Patch0: U_Avoid-heap-overflows-due-to-integer-overflow-signedn.patch
|
|
||||||
BuildRoot: %{_tmppath}/%{name}-%{version}-build
|
BuildRoot: %{_tmppath}/%{name}-%{version}-build
|
||||||
#git#BuildRequires: autoconf >= 2.60, automake, libtool
|
#git#BuildRequires: autoconf >= 2.60, automake, libtool
|
||||||
BuildRequires: fdupes
|
BuildRequires: fdupes
|
||||||
@ -73,7 +72,6 @@ in %lname.
|
|||||||
|
|
||||||
%prep
|
%prep
|
||||||
%setup -q
|
%setup -q
|
||||||
%patch0 -p1
|
|
||||||
|
|
||||||
%build
|
%build
|
||||||
%configure --disable-static
|
%configure --disable-static
|
||||||
|
Loading…
x
Reference in New Issue
Block a user