National Cyber-Alert System
Vulnerability Summary for CVE-2009-0778
Original release date:03/12/2009
Last revised:04/08/2009
Source:
US-CERT/NIST
Overview
The icmp_send function in net/ipv4/icmp.c in the Linux kernel before 2.6.25, when configured as a router with a REJECT route, does not properly manage the Protocol Independent Destination Cache (aka DST) in some situations involving transmission of an ICMP Host Unreachable message, which allows remote attackers to cause a denial of service (connectivity outage) by sending a large series of packets to many destination IP addresses within this REJECT route, related to an "rt_cache leak."
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
- Official Statement from Red Hat (05/19/2009)
-
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and Red Hat Enterprise MRG.
It was addressed in Red Hat Enterprise Linux 5 via: https://rhn.redhat.com/errata/RHSA-2009-0326.html .
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=485163
External Source: XF
Name: linux-kernel-rtcache-dos(49199)
External Source: SECTRACK
Name: 1021958
External Source: BID
Name: 34084
External Source: REDHAT
Name: RHSA-2009:0326
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25
External Source: SECUNIA
Name: 33758
External Source: MLIST
Name: [oss-security] 20090311 CVE-2009-0778 kernel: rt_cache leak
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
