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TITLE:
FreeBSD Direct Pipe Writes Information Disclosure Vulnerability

SECUNIA ADVISORY ID:
SA35398

VERIFY ADVISORY:
http://secunia.com/advisories/35398/

DESCRIPTION:
A vulnerability has been reported in FreeBSD, which can be exploited
by malicious, local users to disclose potentially sensitive
information.

The vulnerability is caused due to an integer overflow within the
implementation of "direct pipe writes", which can lead to
virtual-to-physical address lookups being skipped. This can be
exploited to e.g. disclose memory parts of other processes.

SOLUTION:
Update FreeBSD or apply patches.

Fixed versions:
2009-06-10 10:31:11 UTC (RELENG_7, 7.2-STABLE)
2009-06-10 10:31:11 UTC (RELENG_7_2, 7.2-RELEASE-p1)
2009-06-10 10:31:11 UTC (RELENG_7_1, 7.1-RELEASE-p6)
2009-06-10 10:31:11 UTC (RELENG_6, 6.4-STABLE)
2009-06-10 10:31:11 UTC (RELENG_6_4, 6.4-RELEASE-p5)
2009-06-10 10:31:11 UTC (RELENG_6_3, 6.3-RELEASE-p11)

Patch:
http://security.FreeBSD.org/patches/SA-09:09/pipe.patch.asc

PROVIDED AND/OR DISCOVERED BY:
Pieter de Boer

ORIGINAL ADVISORY:
FreeBSD-SA-09:09.pipe:
http://security.freebsd.org/advisories/FreeBSD-SA-09:09.pipe.asc

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