CVE Database


Impact: Important
Public: 2013-03-26
Bugzilla: 928027: CVE-2013-2266 bind: libdns regular expressions excessive resource consumption DoS
IAVA: 2013-A-0179


The MITRE CVE dictionary describes this issue as:

libdns in ISC BIND 9.7.x and 9.8.x before 9.8.4-P2, 9.8.5 before 9.8.5b2, 9.9.x before 9.9.2-P2, and 9.9.3 before 9.9.3b2 on UNIX platforms allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression, as demonstrated by a memory-exhaustion attack against a machine running a named process.

Find out more about CVE-2013-2266 from the MITRE CVE dictionary and NIST NVD.


This issue did not affect the versions of bind package as shipped with Red Hat Enterprise Linux 3, 4, and 5. This issue was corrected in bind97 packages in Red Hat Enterprise Linux 5 and bind packages in Red Hat Enterprise Linux 6.

CVSS v2 metrics

Base Score: 5.0
Base Metrics: AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector: Network
Access Complexity: Low
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Partial

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 (bind97) RHSA-2013:0690 March 28, 2013
Red Hat Enterprise Linux version 6 (bind) RHSA-2013:0689 March 28, 2013

External References

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.