GLSA-200702-06 : BIND: Denial of Service

This script is Copyright (C) 2007-2015 Tenable Network Security, Inc.

Synopsis :

The remote Gentoo host is missing one or more security-related

Description :

The remote host is affected by the vulnerability described in GLSA-200702-06
(BIND: Denial of Service)

An unspecified improper usage of an already freed context has been
reported. Additionally, an assertion error could be triggered in the
DNSSEC validation of some responses to type ANY queries with multiple

Impact :

A remote attacker could crash the server through unspecified vectors
or, if DNSSEC validation is enabled, by sending certain crafted ANY

Workaround :

There is no known workaround at this time for the first issue. The
DNSSEC validation Denial of Service can be prevented by disabling
DNSSEC validation until the upgrade to a fixed version. Note that
DNSSEC validation is disabled on a default configuration.

See also :

Solution :

All ISC BIND 9.3 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-dns/bind-9.3.4'
All ISC BIND 9.2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-dns/bind-9.2.8'

Risk factor :

High / CVSS Base Score : 7.8
CVSS Temporal Score : 6.8
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 24367 (gentoo_GLSA-200702-06.nasl)

Bugtraq ID: 22229

CVE ID: CVE-2007-0493