Detections
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CentOS 5 : avahi (CESA-2010:0528)
high Nessus Plugin ID 47739
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Synopsis
The remote CentOS host is missing one or more security updates.Description
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.
(CVE-2010-2244)
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.
(CVE-2009-0758)
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.
Solution
Update the affected avahi packages.See Also
Plugin Details
Severity: High
ID: 47739
File Name: centos_RHSA-2010-0528.nasl
Version: 1.14
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 7/16/2010
Updated: 1/4/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
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
Vulnerability Information
CPE: p-cpe:/a:centos:centos:avahi-devel, p-cpe:/a:centos:centos:avahi-glib, p-cpe:/a:centos:centos:avahi-glib-devel, p-cpe:/a:centos:centos:avahi-compat-howl, p-cpe:/a:centos:centos:avahi-compat-howl-devel, p-cpe:/a:centos:centos:avahi-compat-libdns_sd-devel, p-cpe:/a:centos:centos:avahi-tools, p-cpe:/a:centos:centos:avahi-compat-libdns_sd, p-cpe:/a:centos:centos:avahi-qt3, cpe:/o:centos:centos:5, p-cpe:/a:centos:centos:avahi, p-cpe:/a:centos:centos:avahi-qt3-devel
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 7/14/2010
Vulnerability Publication Date: 3/3/2009
Reference Information
CVE: CVE-2009-0758, CVE-2010-2244