Detections
Analytics
RHEL 5 : avahi (RHSA-2011:0436)
high Nessus Plugin ID 53400
Language:
Synopsis
The remote Red Hat host is missing a security update for avahi.Description
The remote Redhat Enterprise Linux 5 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2011:0436 advisory.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 an empty payload. An attacker on the local network could use this flaw to cause avahi-daemon on a target system to enter an infinite loop via an empty mDNS UDP packet. (CVE-2011-1002)
All users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, avahi-daemon will be restarted automatically.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL avahi package based on the guidance in RHSA-2011:0436.See Also
http://www.nessus.org/u?93480687
https://access.redhat.com/security/updates/classification/#moderate
Plugin Details
Severity: High
ID: 53400
File Name: redhat-RHSA-2011-0436.nasl
Version: 1.19
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 4/13/2011
Updated: 3/21/2025
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.1
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 4.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2011-1002
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd, p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl, p-cpe:/a:redhat:enterprise_linux:avahi-qt3, p-cpe:/a:redhat:enterprise_linux:avahi-qt3-devel, p-cpe:/a:redhat:enterprise_linux:avahi-tools, p-cpe:/a:redhat:enterprise_linux:avahi, p-cpe:/a:redhat:enterprise_linux:avahi-devel, p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd-devel, p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl-devel, p-cpe:/a:redhat:enterprise_linux:avahi-glib, p-cpe:/a:redhat:enterprise_linux:avahi-glib-devel
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/12/2011
Vulnerability Publication Date: 2/22/2011
Exploitable With
Core Impact
Reference Information
CVE: CVE-2011-1002
BID: 46446