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


Meet Secunia @ Microsoft Management Summit (MMS) in Las Vegas, USA (21-25 March).

http://secunia.com/company/events/mms_2011/


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

TITLE:
LibTIFF Two Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA43593

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43593/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43593

RELEASE DATE:
2011-03-23

DISCUSS ADVISORY:
http://secunia.com/advisories/43593/#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/43593/

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=43593

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 LibTIFF, which can be
exploited by malicious people to potentially compromise an
application using the library.

1) A boundary error within the "EXPAND2D()" macro in
libtiff/tif_fax3.h when decoding CCITT Group 4 compressed TIFF images
can be exploited to cause a heap-based buffer overflow via specially
crafted TIFF images.

Successful exploitation may allow execution of arbitrary code.

2) A boundary error within the ThunderScan decoder when processing
images with an incorrect number of bitspersample can be exploited to
cause a heap-based buffer overflow via specially crafted ThunderScan
encoded files.

The vulnerabilities are reported in version 3.9.4. Other versions may
also be affected.

SOLUTION:
Fixed in the CVS repository.

PROVIDED AND/OR DISCOVERED BY:
1) Apple Product Security
2) Martin Barbella via ZDI.

ORIGINAL ADVISORY:
APPLE-SA-2011-03-02-1:
http://lists.apple.com/archives/security-announce/2011/Mar/msg00000.html

LibTIFF:
http://bugzilla.maptools.org/show_bug.cgi?id=2300

ZDI-11-107:
http://www.zerodayinitiative.com/advisories/ZDI-11-107/

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/

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

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.

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

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

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