Secunia Security Advisory - A vulnerability has been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service).
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TITLE:
libpng "png_handle_cHRM()" Division By Zero Denial of Service
Vulnerability
SECUNIA ADVISORY ID:
SA46148
VERIFY ADVISORY:
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http://secunia.com/advisories/46148/
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RELEASE DATE:
2011-09-23
DISCUSS ADVISORY:
http://secunia.com/advisories/46148/#comments
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http://secunia.com/advisories/46148/
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DESCRIPTION:
A vulnerability has been reported in libpng, which can be exploited
by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to a division by zero within the
"png_handle_cHRM()" function (libpng/pngrutil.c) when processing
certain cHRM chunks and can be exploited to cause a crash via
specially crafted PNG files.
The vulnerability is reported in version 1.5.4. Prior versions are
not affected.
SOLUTION:
Update to version 1.5.5.
PROVIDED AND/OR DISCOVERED BY:
Reported in a libpng bug by the Qt Commercial Support.
ORIGINAL ADVISORY:
http://libpng.sourceforge.net/index.html
http://sourceforge.net/mailarchive/forum.php?thread_name=CA%2BPdXcsjL1-eqPPSN2m5TvjWsZfUHLaUd1AjnP95PkDE12X4aQ%40mail.gmail.com&forum_name=png-mng-announce
http://sourceforge.net/tracker/index.php?func=detail&aid=3406145&group_id=5624&atid=105624
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
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:
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