CVE-2009-0778

Impact:	Important (classification)
Public:	March 26 2008
Bugzilla:	485163: CVE-2009-0778 kernel: rt_cache leak leads to lack of network connectivity

Details

The MITRE CVE dictionary describes this issue as:

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."

Find out more about CVE-2009-0778 from the MITRE CVE dictionary and NIST NVD.

Statement

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 .

CVSS v2 metrics

Base Score:	7.1	Base Metrics:	AV:N/AC:M/Au:N/C:N/I:N/A:C
Access Vector:	Network	Confidentiality Impact:	None
Access Complexity:	Medium	Integrity Impact:	None
Authentication:	None	Availability Impact:	Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform	Errata	Release Date
Red Hat Enterprise Linux version 5 (kernel)	RHSA-2009:0326	April 01 2009
Red Hat Enterprise Linux EUS (v. 5.2 server) (kernel)	RHSA-2010:0079	February 02 2010

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Red Hat Security Response Team.