Bug 475964 (CVE-2008-5081)

Summary: CVE-2008-5081 avahi: avahi-daemon DoS (application abort) via packet with source port 0
Product: [Other] Security Response Reporter: Tomas Hoger <thoger>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: hdias, kreilly
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2010-03-29 08:48:08 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 475394, 476496, 476497    
Bug Blocks:    

Description Tomas Hoger 2008-12-11 11:05:57 UTC 
Hugo Dias of the Synchron Security Labs discovered a remote denial of service flaw in the avahi daemon.  A crafted multicast DNS (mDNS) packet with source port 0 can trigger assertion in originates_from_local_legacy_unicast_socket() function in avahi-core/server.c -- assert(port > 0); -- causing the daemon to call abort() and exit unexpectedly.

Scope of this attack is usually limited to a single LAN.
Comment 2 Tomas Hoger 2008-12-14 10:26:34 UTC 
Public now via new upstream release 0.6.24:
  http://avahi.org/milestone/Avahi%200.6.24

Upstream patch:
http://git.0pointer.de/?p=avahi.git;a=commitdiff;h=3093047f1aa36bed8a37fa79004bf0ee287929f4
Comment 3 Fedora Update System 2008-12-14 19:49:27 UTC 
avahi-0.6.22-12.fc10 has been submitted as an update for Fedora 10.
http://admin.fedoraproject.org/updates/avahi-0.6.22-12.fc10
Comment 5 Tomas Hoger 2008-12-19 08:40:39 UTC 
Hugo Dias' advisory:
  http://www.synchlabs.com/advisories/200812-1.htm
Comment 6 Fedora Update System 2009-01-07 09:33:06 UTC 
avahi-0.6.22-12.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 7 Tomas Hoger 2010-03-29 08:48:08 UTC 
https://www.redhat.com/security/data/cve/CVE-2008-5081.html