TITLE:
Linux Kernel CIFS chroot Directory Traversal Vulnerability
SECUNIA ADVISORY ID:
SA19868
VERIFY ADVISORY:
http://secunia.com/advisories/19868/
CRITICAL:
Less critical
IMPACT:
Security Bypass
WHERE:
Local system
OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/
DESCRIPTION:
Marcel Holtmann has reported a vulnerability in the Linux Kernel,
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
CIFS mounted filesystem. This can be exploited to bypass chroot
restrictions via the "…\\" directory traversal sequences.
The vulnerability has been reported in versions prior to 2.6.16.11.
SOLUTION:
Update to version 2.6.16.11.
http://kernel.org
PROVIDED AND/OR DISCOVERED BY:
Marcel Holtmann
ORIGINAL ADVISORY:
Kernel.org:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.11
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=296034f7de8bdf111984ce1630ac598a9c94a253
Red Hat Bugzilla:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=189434
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