Secunia Research: MPlayer CDDB Parsing Buffer Overflow

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                     Secunia Research 06/06/2007

               - MPlayer CDDB Parsing Buffer Overflow -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

MPlayer 1.0rc1

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: System Access
Where:  Remote

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3) Vendor's Description of Software 

"MPlayer is a movie player which runs on many systems. It plays most
MPEG/VOB, AVI, Ogg/OGM, VIVO, ASF/WMA/WMV, QT/MOV/MP4, RealMedia,
Matroska, NUT, NuppelVideo, FLI, YUV4MPEG, FILM, RoQ, PVA files,
supported by many native, XAnim, and Win32 DLL codecs. You can watch
VideoCD, SVCD, DVD, 3ivx, DivX 3/4/5 and even WMV movies..".

Product Link:
http://www.mplayerhq.hu/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in MPlayer, which can
be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error within the
"cddb_query_parse()" function in stream/stream_cddb.c when parsing
overly long album titles. This can be exploited to cause a stack-based
buffer overflow by tricking a user into parsing malicious CDDB entries.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is confirmed in version 1.0rc1. Other versions may
also be affected.

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5) Solution 

Apply patch:
http://svn.mplayerhq.hu/mplayer/trunk/stream/stream_cddb.c?r1=23287
&r2=23470&diff_format=u

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6) Time Table 

01/06/2007 - Vendor notified.
04/06/2007 - Vendor response.
06/06/2007 - Public disclosure.

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7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2007-2948 for the vulnerability.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://corporate.secunia.com/

Secunia also provides a publicly accessible and comprehensive advisory
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security and reliability of software in general:

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-55/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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