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GLSA-200702-06 : BIND: Denial of Service

high Nessus Plugin ID 24367

Synopsis

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

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 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.

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'

See Also

https://security.gentoo.org/glsa/200702-06

Plugin Details

Severity: High

ID: 24367

File Name: gentoo_GLSA-200702-06.nasl

Version: 1.18

Type: local

Published: 2/18/2007

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A: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 Ease: No known exploits are available

Patch Publication Date: 2/17/2007

Vulnerability Publication Date: 1/25/2007

Reference Information

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

BID: 22229, 22231

GLSA: 200702-06