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TITLE:
Python imageop "tovideo()" Integer Overflow Security Issue

SECUNIA ADVISORY ID:
SA26837

VERIFY ADVISORY:
http://secunia.com/advisories/26837/

CRITICAL:
Less critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Python 2.4.x
http://secunia.com/product/4604/
Python 2.5.x
http://secunia.com/product/14172/
Python 2.3.x
http://secunia.com/product/1362/
Python 2.2.x
http://secunia.com/product/1361/

DESCRIPTION:
Slythers Bro has discovered a security issue in the imageop module
for Python, which can be exploited by malicious people to cause a DoS
(Denial of Service) and potentially compromise a vulnerable system.

The security issue is caused due to an integer overflow error within
the "tovideo()" function and can be exploited to cause a heap-based
buffer overflow when specially crafted parameters are passed to the
function.

Successful exploitation may allow execution of arbitrary code.

The security issue is confirmed in Python 2.5.1. Other versions may
also be affected.

SOLUTION:
Use the imageop "tovideo()" function to process trusted data only.

PROVIDED AND/OR DISCOVERED BY:
Slythers Bro

ORIGINAL ADVISORY:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-September/065826.html

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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:
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Secunia NEVER sends attached files with advisories.
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