what you don't know can hurt you

Secunia Security Advisory 46148

Secunia Security Advisory 46148
Posted Nov 7, 2011
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service).

tags | advisory, denial of service
MD5 | 8ea26013876b4f452f3562971a50698f

Secunia Security Advisory 46148

Change Mirror Download
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TITLE:
libpng "png_handle_cHRM()" Division By Zero Denial of Service
Vulnerability

SECUNIA ADVISORY ID:
SA46148

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46148/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46148

RELEASE DATE:
2011-09-23

DISCUSS ADVISORY:
http://secunia.com/advisories/46148/#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/46148/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=46148

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).

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:
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/

----------------------------------------------------------------------

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.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

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