TITLE:
MPlayer ASF File Parsing Integer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA18718

VERIFY ADVISORY:
http://secunia.com/advisories/18718/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
MPlayer 1.x
http://secunia.com/product/2255/

DESCRIPTION:
AFI Security Research has discovered two vulnerabilities in mplayer,
which can be exploited by malicious people to cause a DoS (Denial of
Service) and potentially compromise a user's system.

Integer overflow errors exist in the "new_demux_packet()" function in
"libmpdemux/demuxer.h" and the "demux_asf_read_packet()" function in
"libmpdemux/demux_asf.c"  when allocating memory to copy data from an
".asf" file. This can be exploited to cause heap-based buffer
overflows via a specially crafted ".asf" file with an overly large
value in the packet length field. 

The vulnerabilities have been confirmed in version 1.0pre7try2. Other
versions may also be affected.

SOLUTION:
Do not open untrusted ".asf" files.

PROVIDED AND/OR DISCOVERED BY:
AFI Security Research

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------