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TITLE:
RenRen Talk Image Parsing Two Vulnerabilities

SECUNIA ADVISORY ID:
SA47314

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47314/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47314

RELEASE DATE:
2012-01-20

DISCUSS ADVISORY:
http://secunia.com/advisories/47314/#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/47314/

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=47314

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 two vulnerabilities in RenRen Talk, which
can be exploited by malicious people to compromise a user's system.

1) A signedness error when validating image dimensions of skin files
can be exploited to cause a heap-based buffer overflow via e.g. a
specially crafted BMP file.

Successful exploitation of this vulnerability may allow execution of
arbitrary code, but requires tricking a user into configuring a new
skin using a malicious image file.

2) An error when processing images within a chat can be exploited to
cause a heap-based buffer overflow by sending e.g. a specially
crafted PNG file.

Successful exploitation of this vulnerability may allow execution of
arbitrary code, but requires a victim to be an accepted contact on a
buddy list.

The vulnerabilities are confirmed in version 2.9. Other versions may
also be affected.

SOLUTION:
Do not use images from untrusted sources as skin files. Do not chat
with untrusted contacts.

PROVIDED AND/OR DISCOVERED BY:
Tielei Wang via Secunia.

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:
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vulnerabilities.

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