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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2010.0614 Moderate: avahi security update 14 July 2010 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: avahi Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Red Hat Enterprise Linux WS/Desktop 5 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2010-2244 CVE-2009-0758 Reference: ESB-2010.0596 ESB-2009.0246 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2010-0528.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: avahi security update Advisory ID: RHSA-2010:0528-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0528.html Issue date: 2010-07-13 CVE Names: CVE-2009-0758 CVE-2010-2244 ===================================================================== 1. Summary: 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. 2. Relevant releases/architectures: RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: 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. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 488314 - CVE-2009-0758 avahi: remote DoS via legacy unicast mDNS queries 607293 - CVE-2010-2244 avahi: assertion failure after receiving a packet with corrupted checksum 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/avahi-0.6.16-9.el5_5.src.rpm i386: avahi-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.i386.rpm avahi-debuginfo-0.6.16-9.el5_5.i386.rpm avahi-devel-0.6.16-9.el5_5.i386.rpm avahi-glib-0.6.16-9.el5_5.i386.rpm avahi-glib-devel-0.6.16-9.el5_5.i386.rpm avahi-qt3-0.6.16-9.el5_5.i386.rpm avahi-qt3-devel-0.6.16-9.el5_5.i386.rpm avahi-tools-0.6.16-9.el5_5.i386.rpm x86_64: avahi-0.6.16-9.el5_5.i386.rpm avahi-0.6.16-9.el5_5.x86_64.rpm avahi-compat-howl-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-0.6.16-9.el5_5.x86_64.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.x86_64.rpm avahi-debuginfo-0.6.16-9.el5_5.i386.rpm avahi-debuginfo-0.6.16-9.el5_5.x86_64.rpm avahi-glib-0.6.16-9.el5_5.i386.rpm avahi-glib-0.6.16-9.el5_5.x86_64.rpm avahi-qt3-0.6.16-9.el5_5.i386.rpm avahi-qt3-0.6.16-9.el5_5.x86_64.rpm avahi-tools-0.6.16-9.el5_5.x86_64.rpm RHEL Desktop Workstation (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/avahi-0.6.16-9.el5_5.src.rpm i386: avahi-compat-howl-devel-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.i386.rpm avahi-debuginfo-0.6.16-9.el5_5.i386.rpm avahi-devel-0.6.16-9.el5_5.i386.rpm avahi-glib-devel-0.6.16-9.el5_5.i386.rpm avahi-qt3-devel-0.6.16-9.el5_5.i386.rpm x86_64: avahi-compat-howl-devel-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.x86_64.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.x86_64.rpm avahi-debuginfo-0.6.16-9.el5_5.i386.rpm avahi-debuginfo-0.6.16-9.el5_5.x86_64.rpm avahi-devel-0.6.16-9.el5_5.i386.rpm avahi-devel-0.6.16-9.el5_5.x86_64.rpm avahi-glib-devel-0.6.16-9.el5_5.i386.rpm avahi-glib-devel-0.6.16-9.el5_5.x86_64.rpm avahi-qt3-devel-0.6.16-9.el5_5.i386.rpm avahi-qt3-devel-0.6.16-9.el5_5.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/avahi-0.6.16-9.el5_5.src.rpm i386: avahi-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.i386.rpm avahi-debuginfo-0.6.16-9.el5_5.i386.rpm avahi-devel-0.6.16-9.el5_5.i386.rpm avahi-glib-0.6.16-9.el5_5.i386.rpm avahi-glib-devel-0.6.16-9.el5_5.i386.rpm avahi-qt3-0.6.16-9.el5_5.i386.rpm avahi-qt3-devel-0.6.16-9.el5_5.i386.rpm avahi-tools-0.6.16-9.el5_5.i386.rpm ia64: avahi-0.6.16-9.el5_5.ia64.rpm avahi-compat-howl-0.6.16-9.el5_5.ia64.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.ia64.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.ia64.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.ia64.rpm avahi-debuginfo-0.6.16-9.el5_5.ia64.rpm avahi-devel-0.6.16-9.el5_5.ia64.rpm avahi-glib-0.6.16-9.el5_5.ia64.rpm avahi-glib-devel-0.6.16-9.el5_5.ia64.rpm avahi-qt3-0.6.16-9.el5_5.ia64.rpm avahi-qt3-devel-0.6.16-9.el5_5.ia64.rpm avahi-tools-0.6.16-9.el5_5.ia64.rpm ppc: avahi-0.6.16-9.el5_5.ppc.rpm avahi-0.6.16-9.el5_5.ppc64.rpm avahi-compat-howl-0.6.16-9.el5_5.ppc.rpm avahi-compat-howl-0.6.16-9.el5_5.ppc64.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.ppc.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.ppc64.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.ppc.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.ppc64.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.ppc.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.ppc64.rpm avahi-debuginfo-0.6.16-9.el5_5.ppc.rpm avahi-debuginfo-0.6.16-9.el5_5.ppc64.rpm avahi-devel-0.6.16-9.el5_5.ppc.rpm avahi-devel-0.6.16-9.el5_5.ppc64.rpm avahi-glib-0.6.16-9.el5_5.ppc.rpm avahi-glib-0.6.16-9.el5_5.ppc64.rpm avahi-glib-devel-0.6.16-9.el5_5.ppc.rpm avahi-glib-devel-0.6.16-9.el5_5.ppc64.rpm avahi-qt3-0.6.16-9.el5_5.ppc.rpm avahi-qt3-0.6.16-9.el5_5.ppc64.rpm avahi-qt3-devel-0.6.16-9.el5_5.ppc.rpm avahi-qt3-devel-0.6.16-9.el5_5.ppc64.rpm avahi-tools-0.6.16-9.el5_5.ppc.rpm s390x: avahi-0.6.16-9.el5_5.s390.rpm avahi-0.6.16-9.el5_5.s390x.rpm avahi-compat-howl-0.6.16-9.el5_5.s390.rpm avahi-compat-howl-0.6.16-9.el5_5.s390x.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.s390.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.s390x.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.s390.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.s390x.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.s390.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.s390x.rpm avahi-debuginfo-0.6.16-9.el5_5.s390.rpm avahi-debuginfo-0.6.16-9.el5_5.s390x.rpm avahi-devel-0.6.16-9.el5_5.s390.rpm avahi-devel-0.6.16-9.el5_5.s390x.rpm avahi-glib-0.6.16-9.el5_5.s390.rpm avahi-glib-0.6.16-9.el5_5.s390x.rpm avahi-glib-devel-0.6.16-9.el5_5.s390.rpm avahi-glib-devel-0.6.16-9.el5_5.s390x.rpm avahi-qt3-0.6.16-9.el5_5.s390.rpm avahi-qt3-0.6.16-9.el5_5.s390x.rpm avahi-qt3-devel-0.6.16-9.el5_5.s390.rpm avahi-qt3-devel-0.6.16-9.el5_5.s390x.rpm avahi-tools-0.6.16-9.el5_5.s390x.rpm x86_64: avahi-0.6.16-9.el5_5.i386.rpm avahi-0.6.16-9.el5_5.x86_64.rpm avahi-compat-howl-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-0.6.16-9.el5_5.x86_64.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.i386.rpm avahi-compat-howl-devel-0.6.16-9.el5_5.x86_64.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-0.6.16-9.el5_5.x86_64.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.i386.rpm avahi-compat-libdns_sd-devel-0.6.16-9.el5_5.x86_64.rpm avahi-debuginfo-0.6.16-9.el5_5.i386.rpm avahi-debuginfo-0.6.16-9.el5_5.x86_64.rpm avahi-devel-0.6.16-9.el5_5.i386.rpm avahi-devel-0.6.16-9.el5_5.x86_64.rpm avahi-glib-0.6.16-9.el5_5.i386.rpm avahi-glib-0.6.16-9.el5_5.x86_64.rpm avahi-glib-devel-0.6.16-9.el5_5.i386.rpm avahi-glib-devel-0.6.16-9.el5_5.x86_64.rpm avahi-qt3-0.6.16-9.el5_5.i386.rpm avahi-qt3-0.6.16-9.el5_5.x86_64.rpm avahi-qt3-devel-0.6.16-9.el5_5.i386.rpm avahi-qt3-devel-0.6.16-9.el5_5.x86_64.rpm avahi-tools-0.6.16-9.el5_5.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2009-0758.html https://www.redhat.com/security/data/cve/CVE-2010-2244.html http://www.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2010 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFMPKg9XlSAg2UNWIIRApMlAKCNN0yihnW8UFWMQyAvMEjWpmhTmwCfbQmR htt8x42bF3BAtiUDVKXPrGw= =FiFd - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFMPROd/iFOrG6YcBERArzLAKDN6fCxwa3bCTKHQFWMovvZ81n4EQCdG4jz c3ENzh8brMGuWCe16m5WhHU= =Nv6a -----END PGP SIGNATURE-----