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Secunia presentations @ RSA Conference 2012, San Francisco, USA, 27 Feb-02 March
Listen to our Chief Security Specialist, Research Analyst Director, and Director Product Management & Quality Assurance discuss the industry's key topics. Also, visit the Secunia stand #817. Find out more: http://www.rsaconference.com/events/2012/usa/index.htm

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TITLE:
libpng "png_decompress_chunk()" Integer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA48026

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48026/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48026

RELEASE DATE:
2012-02-16

DISCUSS ADVISORY:
http://secunia.com/advisories/48026/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/48026/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=48026

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DESCRIPTION:
A vulnerability has been reported in libpng, which can be exploited
by malicious people to potentially compromise an application using
the library.

The vulnerability is caused due to an integer overflow error within
the "png_decompress_chunk()" function (pngrutil.c) when uncompressing
certain chunks, which can be exploited to cause a heap-based buffer
overflow.

Successful exploitation may allow execution of arbitrary code but
requires tricking the user into opening a specially crafted PNG file.

SOLUTION:
Do not open PNG files from untrusted sources.

PROVIDED AND/OR DISCOVERED BY:
Originally reported by Juri Aedla in Google Chrome.

OTHER REFERENCES:
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DEEP LINKS:
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
Further details available in Customer Area:
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EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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