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TITLE:
libpng "png_formatted_warning()" Off-by-One Vulnerability

SECUNIA ADVISORY ID:
SA47827

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47827/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47827

RELEASE DATE:
2012-02-02

DISCUSS ADVISORY:
http://secunia.com/advisories/47827/#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/47827/

ONLY AVAILABLE IN CUSTOMER AREA:
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 * Report Reliability
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https://ca.secunia.com/?page=viewadvisory&vuln_id=47827

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 potentially compromise an application using
the library.

The vulnerability is caused due to an off-by-one error in the
"png_formatted_warning()" function (pngerror.c) and can be exploited
to corrupt stack-based memory.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is reported in versions 1.5.4 through 1.5.7.

SOLUTION:
Update to version 1.5.8.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.libpng.org/pub/png/libpng.html
http://sourceforge.net/projects/libpng/files/libpng15/1.5.8/libpng-1.5.8-README.txt/view

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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

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use those supplied by the vendor.

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