Bug 238948 - CVE-2007-2172 fib_semantics.c out of bounds access vulnerability
CVE-2007-2172 fib_semantics.c out of bounds access vulnerability
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
5.0
All Linux
medium Severity high
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Assigned To: Don Howard
Martin Jenner
impact=important,source=redhat,report...
: Security
Depends On:
Blocks:
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Reported: 2007-05-03 22:07 EDT by Marcel Holtmann
Modified: 2007-11-30 17:07 EST (History)
2 users (show)

See Also:
Fixed In Version: RHSA-2007-0347
Doc Type: Bug Fix
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Last Closed: 2007-05-16 14:57:37 EDT
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Description Marcel Holtmann 2007-05-03 22:07:16 EDT
The Linux kernel is prone to an out-of-bounds-access vulnerability. This issue
occurs because the semantics for IPv4 Forwarding Information Base fail to
adequately bounds-check user-supplied data before accessing an array.

An attacker can exploit this issue to cause denial-of-service conditions.
Arbitrary code execution may also be possible, but this has not been confirmed.
Comment 1 Don Howard 2007-05-07 13:13:23 EDT
A patch for this issue has been included in build 2.6.18-8.1.4.el5.
Comment 2 Mike Gahagan 2007-05-09 16:08:38 EDT
Confirmed that the patch is in 2.6.18-8.1.4.el5. I take it there is no known
exploit or other test case for this.
Comment 5 Red Hat Bugzilla 2007-05-16 14:57:37 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2007-0347.html

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