GLSA-200702-06 : BIND: Denial of Service

High Nessus Plugin ID 24367


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


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 RRsets.
Impact :

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


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'

See Also

Plugin Details

Severity: High

ID: 24367

File Name: gentoo_GLSA-200702-06.nasl

Version: $Revision: 1.15 $

Type: local

Published: 2007/02/18

Modified: 2016/05/16

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.8

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:ND/RL:ND/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:bind, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2007/02/17

Vulnerability Publication Date: 2007/01/25

Reference Information

CVE: CVE-2007-0493, CVE-2007-0494

BID: 22229, 22231

OSVDB: 31922, 31923

GLSA: 200702-06