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TITLE:
FreeBSD "inet_network()" Off-By-One Vulnerability

SECUNIA ADVISORY ID:
SA28367

VERIFY ADVISORY:
http://secunia.com/advisories/28367/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

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

DESCRIPTION:
A vulnerability has been reported in FreeBSD, which can be exploited
by malicious people to cause a DoS (Denial of Service) or to
potentially compromise a vulnerable system.

The vulnerability is caused due to an off-by-one error within the
"inet_network()" function. This can be exploited to cause a buffer
overflow via a specially crafted argument passed to the affected
function.

The vulnerability affects FreeBSD 6.2.

SOLUTION:
Update FreeBSD or apply patches.

2008-01-14 22:57:45 UTC (RELENG_7, 7.0-PRERELEASE)
2008-01-14 22:55:54 UTC (RELENG_7_0, 7.0-RC2)
2008-01-14 22:56:05 UTC (RELENG_6, 6.3-PRERELEASE)
2008-01-14 22:56:18 UTC (RELENG_6_3, 6.3-RELEASE)
2008-01-14 22:56:44 UTC (RELENG_6_2, 6.2-RELEASE-p10)

Patches (FreeBSD 7.0, 6.3, and 6.2):
http://security.FreeBSD.org/patches/SA-08:02/libc.patch
http://security.FreeBSD.org/patches/SA-08:02/libc.patch.asc

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Bjoern A. Zeeb and Nate Eldredge.

ORIGINAL ADVISORY:
http://security.freebsd.org/advisories/FreeBSD-SA-08:02.libc.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.

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


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
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