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

Want to work within IT-Security?

Secunia is expanding its team of highly skilled security experts.
We will help with relocation and obtaining a work permit.

Currently the following type of positions are available:
http://secunia.com/quality_assurance_analyst/
http://secunia.com/web_application_security_specialist/ 
http://secunia.com/hardcore_disassembler_and_reverse_engineer/

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

TITLE:
XFree86 CID Encoded Fonts Integer Overflows

SECUNIA ADVISORY ID:
SA21890

VERIFY ADVISORY:
http://secunia.com/advisories/21890/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
XFree86 4.1.x
http://secunia.com/product/3012/
XFree86 4.2.x
http://secunia.com/product/3011/
XFree86 4.3.x
http://secunia.com/product/1131/
XFree86 4.4.x
http://secunia.com/product/3510/
XFree86 4.5.x
http://secunia.com/product/4870/
XFree86 4.6.x
http://secunia.com/product/11386/

DESCRIPTION:
Some vulnerabilities have been reported in XFree86, which can be
exploited by malicious, local users to gain escalated privileges.

Integer overflows exist within the "scan_cidfont()" function when
handling CMap and CIDFont data, and the "CIDAFM()" function when
parsing AFM (Adobe Font Metric) files. These can potentially be
exploited to execute arbitrary code via specially crafted CID encoded
Type1 fonts.

Successful exploitation may allow to execute arbitrary code with
escalated privileges.

SOLUTION:
Do not load the "type1" font module.

PROVIDED AND/OR DISCOVERED BY:
Discovered by an anonymous person and reported via iDEFENSE.

ORIGINAL ADVISORY:
iDEFENSE:
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=411
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=412

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

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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

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

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