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TITLE:
libpng Two Vulnerabilities

SECUNIA ADVISORY ID:
SA40302

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40302/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40302

RELEASE DATE:
2010-06-29

DISCUSS ADVISORY:
http://secunia.com/advisories/40302/#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/40302/

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

https://ca.secunia.com/?page=viewadvisory&vuln_id=40302

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:
Two vulnerabilities have 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.

1) An error within progressive applications when handling image row
data can be exploited to potentially cause a buffer overflow by e.g.
providing one additional image row beyond the height reported in the
header.

Successful exploitation may allow the execution of arbitrary code.

2) A memory leak exists within the handling of certain sCAL chunks.
This can be exploited to e.g. cause a crash via specially crafted PNG
images.

The vulnerabilities are reported in versions prior to 1.2.44 and
1.4.3.

SOLUTION:
Update to version 1.2.44 and 1.4.3.

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

ORIGINAL ADVISORY:
http://www.libpng.org/pub/png/libpng.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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About:
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private users keeping their systems up to date against the latest
vulnerabilities.

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