CVE-2011-1770

Impact:
Important
Public Date:
2011-05-06
Bugzilla:
703011: CVE-2011-1770 kernel: dccp: handle invalid feature options length

The MITRE CVE dictionary describes this issue as:

Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14 allows remote attackers to cause a denial of service via a Datagram Congestion Control Protocol (DCCP) packet with an invalid feature options length, which triggers a buffer over-read.

Find out more about CVE-2011-1770 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect Red Hat Enterprise Linux 4 and 5: Red Hat Enterprise Linux 4 does not provide support for the Datagram Congestion Control Protocol (DCCP), and Red Hat Enterprise Linux 5, which does support DCCP, did not backport the upstream commit that introduced this issue, e77b8363b. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0836.html and https://rhn.redhat.com/errata/RHSA-2011-1253.html.

CVSS v2 metrics

Base Score 7.8
Base Metrics AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
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 6 (kernel) RHSA-2011:0836 2011-06-01
Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2011:1253 2011-09-12
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank Dan Rosenberg for reporting this issue.
Last Modified

CVE description copyright © 2017, The MITRE Corporation