Bug 238948

Summary:	CVE-2007-2172 fib_semantics.c out of bounds access vulnerability
Product:	Red Hat Enterprise Linux 5	Reporter:	Marcel Holtmann <holtmann>
Component:	kernel	Assignee:	Don Howard <dhoward>
Status:	CLOSED ERRATA	QA Contact:	Martin Jenner <mjenner>
Severity:	high	Docs Contact:
Priority:	medium
Version:	5.0	CC:	dzickus, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	impact=important,source=redhat,reported=20070413,public=20070326
Fixed In Version:	RHSA-2007-0347	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-05-16 18:57:37 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Marcel Holtmann 2007-05-04 02:07:16 UTC

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 17:13:23 UTC

A patch for this issue has been included in build 2.6.18-8.1.4.el5.

Comment 2 Mike Gahagan 2007-05-09 20:08:38 UTC

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 18:57:37 UTC

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