Public Date:
928027: CVE-2013-2266 bind: libdns regular expressions excessive resource consumption DoS

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 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

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 5
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 6 (bind) RHSA-2013:0689 2013-03-28
Red Hat Enterprise Linux version 5 (bind97) RHSA-2013:0690 2013-03-28

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 bind Not affected
Red Hat Enterprise Linux 4 bind Not affected

External References