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TITLE:
libpng "png_do_rgb_to_gray()" PNG Processing Vulnerability

SECUNIA ADVISORY ID:
SA42863

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42863/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42863

RELEASE DATE:
2011-01-13

DISCUSS ADVISORY:
http://secunia.com/advisories/42863/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/42863/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42863

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in libpng, which can be exploited
by malicious people to cause a DoS (Denial of Service) and
potentially compromise an application using the library.

The vulnerability is caused due to an error within the
"png_do_rgb_to_gray()" function in pngrtran.c, which can be exploited
to cause a buffer overflow by e.g. tricking a user into opening a
specially crafted PNG file in an application using the library.

The vulnerability is reported in version 1.5.0. Prior versions are
not affected.

SOLUTION:
Fixed in version 1.5.1beta01.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

PROVIDED AND/OR DISCOVERED BY:
Glenn Randers-Pehrson

ORIGINAL ADVISORY:
Glenn Randers-Pehrson:
http://sourceforge.net/mailarchive/message.php?msg_id=26866318

libpng:
http://libpng.sourceforge.net/index.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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