Oracle Linux 5 : avahi (ELSA-2010-0528)

High Nessus Plugin ID 68061


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


From Red Hat Security Advisory 2010:0528 :

Updated avahi packages that fix two security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zero Configuration Networking. It facilitates service discovery on a local network. Avahi and Avahi-aware applications allow you to plug your computer into a network and, with no configuration, view other people to chat with, view printers to print to, and find shared files on other computers.

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.

All users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the update, avahi-daemon will be restarted automatically.


Update the affected avahi packages.

See Also

Plugin Details

Severity: High

ID: 68061

File Name: oraclelinux_ELSA-2010-0528.nasl

Version: $Revision: 1.4 $

Type: local

Agent: unix

Published: 2013/07/12

Modified: 2015/12/01

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.8

Temporal Score: 6.4

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:avahi, p-cpe:/a:oracle:linux:avahi-compat-howl, p-cpe:/a:oracle:linux:avahi-compat-howl-devel, p-cpe:/a:oracle:linux:avahi-compat-libdns_sd, p-cpe:/a:oracle:linux:avahi-compat-libdns_sd-devel, p-cpe:/a:oracle:linux:avahi-devel, p-cpe:/a:oracle:linux:avahi-glib, p-cpe:/a:oracle:linux:avahi-glib-devel, p-cpe:/a:oracle:linux:avahi-qt3, p-cpe:/a:oracle:linux:avahi-qt3-devel, p-cpe:/a:oracle:linux:avahi-tools, cpe:/o:oracle:linux:5

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2010/07/13

Reference Information

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

BID: 33946, 41075

RHSA: 2010:0528

CWE: 399