Bug 475964 - (CVE-2008-5081) CVE-2008-5081 avahi: avahi-daemon DoS (application abort) via packet with source port 0
CVE-2008-5081 avahi: avahi-daemon DoS (application abort) via packet with sou...
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 475394 476496 476497
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Reported: 2008-12-11 06:05 EST by Tomas Hoger
Modified: 2010-03-29 04:48 EDT (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2010-03-29 04:48:08 EDT
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Description Tomas Hoger 2008-12-11 06:05:57 EST
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 05:26:34 EST
Public now via new upstream release 0.6.24:

Upstream patch:
Comment 3 Fedora Update System 2008-12-14 14:49:27 EST
avahi-0.6.22-12.fc10 has been submitted as an update for Fedora 10.
Comment 5 Tomas Hoger 2008-12-19 03:40:39 EST
Hugo Dias' advisory:
Comment 6 Fedora Update System 2009-01-07 04:33:06 EST
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.

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