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The remote Oracle Linux host is missing one or more security updates.
From Red Hat Security Advisory 2011:0436 :
Updated avahi packages that fix one security issue are now available
for Red Hat Enterprise Linux 5.
The Red Hat Security Response Team has rated this update as having
moderate security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from
the CVE link 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 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.
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.
See also :
Update the affected avahi packages.
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.3
Public Exploit Available : true
Family: Oracle Linux Local Security Checks
Nessus Plugin ID: 68255 ()
Bugtraq ID: 46446
CVE ID: CVE-2011-1002
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