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Red Hat Update RHSA-2009:0013-01 Addresses Avahi DoS Vulnerability Issue

red hat
Calendar Grey January 12, 2009
Dist Redhat Esm H88
Red Hat issues a crucial security bulletin concerning samba software, targeting a moderate severity DDoS vulnerability.
Updated avahi packages that fix a security issue are now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat S...

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

Summary

Avahi is an implementation of the DNS Service Discovery and Multicast DNS specifications for Zeroconf 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, see printers to print to, and find shared files on other computers.
Hugo Dias discovered a denial of service flaw in avahi-daemon. A remote attacker on the same local area network (LAN) could send a specially-crafted mDNS (Multicast DNS) packet that would cause avahi-daemon to exit unexpectedly due to a failed assertion check. (CVE-2008-5081)
All users are advised to upgrade to these updated packages, which contain a backported patch which resolves this issue. After installing the update, avahi-daemon will be restarted automatically.

Topics%20covered

Topics Covered

security advisory security issue Red Hat moderate severity networking DoS flaw avahi update

References

https://www.cve.org/CVERecord?id=CVE-2008-5081 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: avahi-0.6.16-1.el5_2.1.i386.rpm avahi-compat-howl-0.6.16-1.el5_2.1.i386.rpm avahi-compat-libdns_sd-0.6.16-1.el5_2.1.i386.rpm avahi-debuginfo-0.6.16-1.el5_2.1.i386.rpm avahi-glib-0.6.16-1.el5_2.1.i386.rpm avahi-qt3-0.6.16-1.el5_2.1.i386.rpm avahi-tools-0.6.16-1.el5_2.1.i386.rpm
x86_64: avahi-0.6.16-1.el5_2.1.i386.rpm avahi-0.6.16-1.el5_2.1.x86_64.rpm avahi-compat-howl-0.6.16-1.el5_2.1.i386.rpm avahi-compat-howl-0.6.16-1.el5_2.1.x86_64.rpm avahi-compat-libdns_sd-0.6.16-1.el5_2.1.i386.rpm avahi-compat-libdns_sd-0.6.16-1.el5_2.1.x86_64.rpm avahi-debuginfo-0.6.16-1.el5_2.1.i386.rpm avahi-debuginfo-0.6.16-1.el5_2.1.x86_64.rpm avahi-glib-0.6.16-1.el5_2.1.i386.rpm avahi-glib-0.6.16-1.el5_2.1.x86_64.rpm avahi-qt3-0.6.16-1.el5_2.1.i386.rpm avahi-qt3-0.6.16-1.el5_2.1.x86_64.rpm avahi-tools-0.6.16-1.el5_2.1.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: avahi-compat-howl-devel-0.6.16-1.el5_2.1.i386.rpm avahi-compat-libdns_sd-devel-0.6.16-1.el5_2.1.i386.rpm avahi-debuginfo-0.6.16-1.el5_2.1.i386.rpm avahi-devel-0.6.16-1.el5_2.1.i386.rpm avahi-glib-devel-0.6.16-1.el5_2.1.i386.rpm avahi-qt3-devel-0.6.16-1.el5_2.1.i386.rpm
x86_64:

Read the Full Advisory


Advisory ID: RHSA-2009:0013-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2009:0013.html
Issue date: 2009-01-12

Topic

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

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Topics%20covered

Topics Covered

security advisory security issue Red Hat moderate severity networking DoS flaw avahi update

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

475964 - CVE-2008-5081 avahi: avahi-daemon DoS (application abort) via packet with source port 0

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