Bug 204912 - CVE-2006-4623 Wrong handling of DVB ULE SNDU with length of 0
Summary: CVE-2006-4623 Wrong handling of DVB ULE SNDU with length of 0
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Neil Horman
QA Contact: Brian Brock
Whiteboard: impact=low,source=vendorsec,reported=...
Keywords: Security
Depends On:
TreeView+ depends on / blocked
Reported: 2006-09-01 10:39 UTC by Marcel Holtmann
Modified: 2007-11-30 22:07 UTC (History)
2 users (show)

Clone Of:
Last Closed: 2006-10-05 19:20:27 UTC

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2006:0689 normal SHIPPED_LIVE Important: kernel security update 2006-10-05 04:00:00 UTC

Description Marcel Holtmann 2006-09-01 10:39:05 UTC
From Ang Way Chuang:

ULE (Unidirectional Lightweight Encapsulation RFC 4326) decapsulation code has a
bug that allows an attacker to send a malformed ULE packet with SNDU length of 0
and bring down the receiving machine. The kernel will produce a dump during
CRC32 checking on faulty ULE packet.

Comment 5 Neil Horman 2006-09-15 19:49:53 UTC
 don't have any hardware to test this, but it looks pretty obvious.  I'll smoke
test and patch

Comment 6 Jason Baron 2006-09-22 00:40:49 UTC
committed in stream U5 build 42.13. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/

Comment 7 Jason Baron 2006-09-26 14:38:21 UTC
committed in stream E5 build 42.0.3

Comment 8 RHEL Product and Program Management 2006-09-27 22:35:41 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update

Comment 11 Red Hat Bugzilla 2006-10-05 19:20:27 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.


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