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TITLE:
Yahoo! Messenger Webcam JPEG 2000 Processing Buffer Overflow

SECUNIA ADVISORY ID:
SA26501

VERIFY ADVISORY:
http://secunia.com/advisories/26501/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Yahoo! Messenger 8.x
http://secunia.com/product/12122/

DESCRIPTION:
A vulnerability has been reported in Yahoo! Messenger, which
potentially can be exploited by malicious people to cause a DoS
(Denial of Service) or compromise a user's system.

The vulnerability is caused due to an input validation error when
processing JPEG 2000 streams sent via the webcam stream. This can be
exploited to cause a heap-based buffer overflow when a user e.g. is
tricked into viewing  a malicious webcam stream.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is reported in version 8.1.0.413. Other versions
may also be affected.

SOLUTION:
Do not accept untrusted webcam invites.

PROVIDED AND/OR DISCOVERED BY:
team509

ORIGINAL ADVISORY:
https://www.xfocus.net/bbs/index.php?act=ST&f=2&t=64639&page=1#entry321749

OTHER REFERENCES:
US-CERT VU#515968:
http://www.kb.cert.org/vuls/id/515968

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

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


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

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