1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 200602-01 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
http://security.gentoo.org/ |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
Severity: Normal |
8 |
Title: GStreamer FFmpeg plugin: Heap-based buffer overflow |
9 |
Date: February 05, 2006 |
10 |
Bugs: #119512 |
11 |
ID: 200602-01 |
12 |
|
13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
14 |
|
15 |
Synopsis |
16 |
======== |
17 |
|
18 |
The GStreamer FFmpeg plugin is vulnerable to a buffer overflow that may |
19 |
be exploited by attackers to execute arbitrary code. |
20 |
|
21 |
Background |
22 |
========== |
23 |
|
24 |
The GStreamer FFmpeg plugin uses code from the FFmpeg library to |
25 |
provide fast colorspace conversion and multimedia decoders to the |
26 |
GStreamer open source media framework. |
27 |
|
28 |
Affected packages |
29 |
================= |
30 |
|
31 |
------------------------------------------------------------------- |
32 |
Package / Vulnerable / Unaffected |
33 |
------------------------------------------------------------------- |
34 |
1 media-plugins/gst-plugins-ffmpeg < 0.8.7-r1 >= 0.8.7-r1 |
35 |
|
36 |
Description |
37 |
=========== |
38 |
|
39 |
The GStreamer FFmpeg plugin contains derived code from the FFmpeg |
40 |
library, which is vulnerable to a heap overflow in the |
41 |
"avcodec_default_get_buffer()" function discovered by Simon Kilvington |
42 |
(see GLSA 200601-06). |
43 |
|
44 |
Impact |
45 |
====== |
46 |
|
47 |
A remote attacker could entice a user to run an application using the |
48 |
GStreamer FFmpeg plugin on a maliciously crafted PIX_FMT_PAL8 format |
49 |
image file (like PNG images), possibly leading to the execution of |
50 |
arbitrary code with the permissions of the user running the |
51 |
application. |
52 |
|
53 |
Workaround |
54 |
========== |
55 |
|
56 |
There is no known workaround at this time. |
57 |
|
58 |
Resolution |
59 |
========== |
60 |
|
61 |
All GStreamer FFmpeg plugin users should upgrade to the latest version: |
62 |
|
63 |
# emerge --sync |
64 |
# emerge --ask --oneshot --verbose ">=media-plugins/gst-plugins-ffmpeg-0.8.7-r1" |
65 |
|
66 |
References |
67 |
========== |
68 |
|
69 |
[ 1 ] CVE-2005-4048 |
70 |
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4048 |
71 |
[ 2 ] GLSA 200601-06 |
72 |
http://www.gentoo.org/security/en/glsa/glsa-200601-06.xml |
73 |
|
74 |
Availability |
75 |
============ |
76 |
|
77 |
This GLSA and any updates to it are available for viewing at |
78 |
the Gentoo Security Website: |
79 |
|
80 |
http://security.gentoo.org/glsa/glsa-200602-01.xml |
81 |
|
82 |
Concerns? |
83 |
========= |
84 |
|
85 |
Security is a primary focus of Gentoo Linux and ensuring the |
86 |
confidentiality and security of our users machines is of utmost |
87 |
importance to us. Any security concerns should be addressed to |
88 |
security@g.o or alternatively, you may file a bug at |
89 |
http://bugs.gentoo.org. |
90 |
|
91 |
License |
92 |
======= |
93 |
|
94 |
Copyright 2006 Gentoo Foundation, Inc; referenced text |
95 |
belongs to its owner(s). |
96 |
|
97 |
The contents of this document are licensed under the |
98 |
Creative Commons - Attribution / Share Alike license. |
99 |
|
100 |
http://creativecommons.org/licenses/by-sa/2.0 |