Secunia Security Advisory - A vulnerability has been reported in FreeBSD, which can be exploited by malicious, local users to bypass certain security restrictions.
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TITLE:
FreeBSD SMBFS chroot Directory Traversal Vulnerability
SECUNIA ADVISORY ID:
SA20390
VERIFY ADVISORY:
http://secunia.com/advisories/20390/
CRITICAL:
Less critical
IMPACT:
Security Bypass
WHERE:
Local system
OPERATING SYSTEM:
FreeBSD 4.x
http://secunia.com/product/139/
FreeBSD 5.x
http://secunia.com/product/1132/
FreeBSD 6.x
http://secunia.com/product/6778/
DESCRIPTION:
A vulnerability has been reported in FreeBSD, which can be exploited
by malicious, local users to bypass certain security restrictions.
The vulnerability is caused due to an input validation error in the
SMBFS mounted file system and can be exploited to bypass chroot
restrictions via the "..\" directory traversal sequence.
SOLUTION:
Update FreeBSD or apply patches.
Fixed versions:
2006-05-31 22:31:21 UTC (RELENG_6, 6.1-STABLE)
2006-05-31 22:31:42 UTC (RELENG_6_1, 6.1-RELEASE-p1)
2006-05-31 22:32:04 UTC (RELENG_6_0, 6.0-RELEASE-p8)
2006-05-31 22:32:22 UTC (RELENG_5, 5.5-STABLE)
2006-05-31 22:32:49 UTC (RELENG_5_5, 5.5-RELEASE-p1)
2006-05-31 22:33:17 UTC (RELENG_5_4, 5.4-RELEASE-p15)
2006-05-31 22:33:41 UTC (RELENG_5_3, 5.3-RELEASE-p30)
2006-05-31 22:34:32 UTC (RELENG_4, 4.11-STABLE)
2006-05-31 22:34:53 UTC (RELENG_4_11, 4.11-RELEASE-p18)
2006-05-31 22:35:32 UTC (RELENG_4_10, 4.10-RELEASE-p24)
Patch for FreeBSD 4.10, 4.11, 5.3, 5.4, 5.5, 6.0, and 6.1:
http://security.FreeBSD.org/patches/SA-06:16/smbfs.patch
http://security.FreeBSD.org/patches/SA-06:16/smbfs.patch.asc
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Mark Moseley.
ORIGINAL ADVISORY:
http://security.freebsd.org/advisories/FreeBSD-SA-06:16.smbfs.asc
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About:
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