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TITLE:
GNU Gnash "GnashImage::size()" Integer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA47183

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47183/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47183

RELEASE DATE:
2012-03-13

DISCUSS ADVISORY:
http://secunia.com/advisories/47183/#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/47183/

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=47183

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:
Tielei Wang has discovered a vulnerability in GNU Gnash, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an integer overflow error within
the "GnashImage::size()" method (libbase/GnashImage.h) and can be
exploited to cause a heap-based buffer overflow by tricking a user
into opening a specially crafted SWF file.

The vulnerability is confirmed in version 0.8.10. Prior versions may
also be affected.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
Tielei Wang, Georgia Tech Information Security Center via Secunia.

ORIGINAL ADVISORY:
http://git.savannah.gnu.org/cgit/gnash.git/commit/?id=bb4dc77eecb6ed1b967e3ecbce3dac6c5e6f1527

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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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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