CVE-2011-2699

Impact:
Important
Public Date:
2011-07-20
IAVA:
2012-A-0148, 2012-A-0153
Bugzilla:
723429: CVE-2011-2699 kernel: ipv6: make fragment identifications less predictable

The MITRE CVE dictionary describes this issue as:

The IPv6 implementation in the Linux kernel before 3.1 does not generate Fragment Identification values separately for each destination, which makes it easier for remote attackers to cause a denial of service (disrupted networking) by predicting these values and sending crafted packets.

Find out more about CVE-2011-2699 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise MRG as it has backported the fix that addresses this issue. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates. This has been addressed in Red Hat Enterprise Linux 5 and 6 via https://rhn.redhat.com/errata/RHSA-2011-1386.html and https://rhn.redhat.com/errata/RHSA-2011-1465.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
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact 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 EUS (v. 5.6 server) (kernel) RHSA-2012:0358 2012-03-06
Red Hat Enterprise Linux 6 (kernel) RHSA-2011:1465 2011-11-22
Red Hat Enterprise Linux 5 (kernel) RHSA-2011:1386 2011-10-20

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Affected
Red Hat Enterprise Linux 4 kernel Will not fix

Acknowledgements

Red Hat would like to thank Fernando Gont for reporting this issue.

Last Modified

CVE description copyright © 2017, The MITRE Corporation