Scientific Linux Security Update : avahi on SL5.x i386/x86_64

High Nessus Plugin ID 60814


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


A flaw was found in the way the Avahi daemon (avahi-daemon) processed Multicast DNS (mDNS) packets with corrupted checksums. An attacker on the local network could use this flaw to cause avahi-daemon on a target system to exit unexpectedly via specially crafted mDNS packets.

A flaw was found in the way avahi-daemon processed incoming unicast mDNS messages. If the mDNS reflector were enabled on a system, an attacker on the local network could send a specially crafted unicast mDNS message to that system, resulting in its avahi-daemon flooding the network with a multicast packet storm, and consuming a large amount of CPU. Note: The mDNS reflector is disabled by default.

After installing the update, avahi-daemon will be restarted automatically.


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 60814

File Name: sl_20100713_avahi_on_SL5_x.nasl

Version: $Revision: 1.2 $

Type: local

Agent: unix

Published: 2012/08/01

Modified: 2014/08/16

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.8

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2010/07/13

Reference Information

CVE: CVE-2009-0758, CVE-2010-2244

CWE: 399