[SA18296] OpenBSD suid Programs File Re-Opening Vulnerability

TITLE:
OpenBSD suid Programs File Re-Opening Vulnerability

SECUNIA ADVISORY ID:
SA18296

VERIFY ADVISORY:
http://secunia.com/advisories/18296/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
Local system

OPERATING SYSTEM:
OpenBSD 3.x
http://secunia.com/product/100/

DESCRIPTION:
A vulnerability has been reported in OpenBSD, which potentially can
be exploited by malicious, local users to bypass certain security
restrictions.

The vulnerability is caused due to an unspecified error in the
handling of "/dev/fd". This can be exploited by malicious users to
trick suid programs into re-opening files via "/dev/fd".

SOLUTION:
Apply patches.

OpenBSD 3.8:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.8/common/002_fd.patch

OpenBSD 3.7:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.7/common/008_fd.patch

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://www.openbsd.org/errata37.html#fd

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About:
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