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TITLE:
FreeBSD AMD64 General Protection Fault Privilege Escalation

SECUNIA ADVISORY ID:
SA31743

VERIFY ADVISORY:
http://secunia.com/advisories/31743/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

OPERATING SYSTEM:
FreeBSD 6.x
http://secunia.com/product/6778/

DESCRIPTION:
FreeBSD has acknowledged a vulnerability, which can be exploited by
malicious, local users to gain escalated privileges.

The vulnerability is caused due to an error within the handling of
general protection faults when returning from processing certain
other events (e.g. interrupts, traps, or system calls). This can be
exploited to execute arbitrary code with kernel privileges.

Note: This only affects 64bit systems running a FreeBSD/amd64
kernel.

The vulnerability is reported in all FreeBSD/amd64 versions.

SOLUTION:
Update FreeBSD or apply patches.

2008-08-21 09:58:18 UTC (RELENG_7, 7.0-STABLE)
2008-09-03 19:09:47 UTC (RELENG_7_0, 7.0-RELEASE-p4)
2008-09-03 19:09:47 UTC (RELENG_6, 6.4-PRERELEASE)
2008-09-03 19:09:47 UTC (RELENG_6_3, 6.3-RELEASE-p4)

Patch:
http://security.FreeBSD.org/patches/SA-08:07/amd64.patch

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Nate Eldredge.

ORIGINAL ADVISORY:
http://security.freebsd.org/advisories/FreeBSD-SA-08:07.amd64.asc

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

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http://secunia.com/about_secunia_advisories/


Please Note:
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Secunia NEVER sends attached files with advisories.
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