[SA18718] MPlayer ASF File Parsing Integer Overflow Vulnerabilities

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:
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