xine-lib: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200409-30 / xine-lib
Release Date	September 22, 2004
Latest Revision	May 22, 2006: 02
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/xine-lib	<= 1_rc5-r3	>= 1_rc6	All supported architectures

Related bugreports: #64348

Synopsis

xine-lib contains several vulnerabilities potentially allowing the execution of arbitrary code.

2. Impact Information

Background

xine-lib is a multimedia library which can be utilized to create multimedia frontends.

Description

xine-lib contains two stack-based overflows and one heap-based overflow. In the code reading VCD disc labels, the ISO disc label is copied into an unprotected stack buffer of fixed size. Also, there is a buffer overflow in the code that parses subtitles and prepares them for display (XSA-2004-4). Finally, xine-lib contains a heap-based overflow in the DVD sub-picture decoder (XSA-2004-5).

(Please note that the VCD MRL issue mentioned in XSA-2004-4 was fixed with GLSA 200408-18.)

Impact

With carefully-crafted VCDs, DVDs, MPEGs or subtitles, an attacker may cause xine-lib to execute arbitrary code with the permissions of the user.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All xine-lib users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge sync

# emerge -pv ">=media-libs/xine-lib-1_rc6"
# emerge ">=media-libs/xine-lib-1_rc6"

4. References

Page updated September 22, 2004

Summary: This is a Gentoo Linux Security Advisory

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