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Secunia Security Advisory 45544

Secunia Security Advisory 45544
Posted Aug 11, 2011
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in X.Org libXfont, which can be exploited by malicious, local users to gain escalated privileges.

tags | advisory, local
MD5 | 42096fa3549bd7634a7cefa25c4c6781

Secunia Security Advisory 45544

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TITLE:
X.Org libXfont LZW Decompression Privilege Escalation Vulnerability

SECUNIA ADVISORY ID:
SA45544

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45544/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45544

RELEASE DATE:
2011-08-11

DISCUSS ADVISORY:
http://secunia.com/advisories/45544/#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/45544/

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=45544

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:
A vulnerability has been reported in X.Org libXfont, which can be
exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to a boundary error within the
"BufCompressedFill()" function (src/fontfile/decompress.c), which can
be exploited to cause a heap-based buffer overflow via specially
crafted font files.

The vulnerability is reported in versions prior to 1.4.4.

SOLUTION:
Update to version 1.4.4.

PROVIDED AND/OR DISCOVERED BY:
Tomas Hoger, Red Hat Security Response Team

ORIGINAL ADVISORY:
http://lists.freedesktop.org/archives/xorg-announce/2011-August/001721.html

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/

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

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.

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

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