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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:
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 * Criticality Level
 * Impact
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http://secunia.com/advisories/45544/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=45544

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http://secunia.com/vulnerability_scanning/personal/
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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/

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About:
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