Bug 192633

Summary: CVE-2006-2444 SNMP NAT netfilter memory corruption
Product: Red Hat Enterprise Linux 3 Reporter: Marcel Holtmann <holtmann>
Component: kernelAssignee: Thomas Graf <tgraf>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0CC: davem, dhoward, jburke, lwang, mjenner, peterm, petrides, rkhan, security-response-team, syeghiay
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,source=vendorsec,reported=20060521,public=20060520
Fixed In Version: RHSA-2006-0437 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-07-20 14:09:43 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:
Bug Depends On:    
Bug Blocks: 181408    
Attachments:
Description Flags
proposed patch none

Description Marcel Holtmann 2006-05-22 08:20:42 UTC 
The SNMP NAT helper netfilter can cause a memory corruption. The corruption can
be triggered remotely when the ip_nat_snmp_basic module is loaded and traffic on
port 161 or 162 is NATed.

Proposed upstream fix can be found here:

https://lists.netfilter.org/pipermail/netfilter-devel/2006-May/024422.html
Comment 2 Ernie Petrides 2006-06-14 23:03:20 UTC 
Reapplying lost comment from jburke on 2006-06-12 15:14 EST:


Building a test kernel now. Once built I will run the kernel through RHTS.
Comment 3 Jeff Burke 2006-06-14 23:43:36 UTC 
The RHTS job has finished but with errors.  The errors are not because of the
kernel. There were power outages in the RDU office that caused the tests to fail.

I will reschedule the RHTS jobs for S390 and ppc. All other arches have passed.
Comment 4 Jeff Burke 2006-06-14 23:47:39 UTC 
I am still trying to get the original issue reproduced. 

 It looks like
it can be reproduced with a test tool from MIT:
ftp://ftp.lcs.mit.edu/nets/snmpdk.tar.Z 
http://www.cis.upenn.edu/~davin/snmpdk.html

    I will first verify that I can duplicate the issue. If in fact I
can verify the issue. I will then verify the fix by using the kernel that
is being built through beehive kernel-2.4.21-44.EL.BZ192633.2.src.rpm.
Comment 5 Don Howard 2006-06-15 00:49:46 UTC 
java-based version of the snmp test tool available here:
http://www.ee.oulu.fi/research/ouspg/protos/testing/c06/snmpv1
Comment 6 Ernie Petrides 2006-06-15 21:55:36 UTC 
Downgrading impact to moderate due to "unlikely configuration".
Comment 11 Thomas Graf 2006-06-20 19:02:34 UTC 
Created attachment 131213 [details]
proposed patch
Comment 16 Ernie Petrides 2006-06-21 23:16:20 UTC 
A fix for this problem has just been committed to the RHEL3 U8
patch pool this evening (in kernel version 2.4.21-45.EL).
Comment 19 Red Hat Bugzilla 2006-07-20 14:09:44 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-2006-0437.html