Scientific Linux Security Update : bind security for SL 4.x on i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

CVE-2009-0696 bind: DoS (assertion failure) via nsupdate packets

A flaw was found in the way BIND handles dynamic update message
packets containing the 'ANY' record type. A remote attacker could use
this flaw to send a specially-crafted dynamic update packet that could
cause named to exit with an assertion failure. (CVE-2009-0696)

Note: even if named is not configured for dynamic updates, receiving
such a specially-crafted dynamic update packet could still cause named
to exit unexpectedly.

This update also fixes the following bug :

- when running on a system receiving a large number of
(greater than 4,000) DNS requests per second, the named
DNS nameserver became unresponsive, and the named
service had to be restarted in order for it to continue
serving requests. This was caused by a deadlock
occurring between two threads that led to the inability
of named to continue to service requests. This deadlock
has been resolved with these updated packages so that
named no longer becomes unresponsive under heavy load.
(BZ#512668)

After installing the update, the BIND daemon (named) will be restarted
automatically.

See also :

http://www.nessus.org/u?a7dfd170
https://bugzilla.redhat.com/show_bug.cgi?id=512668

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P)
Public Exploit Available : true

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60629 ()

Bugtraq ID:

CVE ID: CVE-2009-0696