REDHAT-BUG-475964
First published: Thu Dec 11 2008(Updated: )
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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Avahi AutoIP Daemon |
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Reference Links
- http://avahi.org/milestone/Avahi%200.6.24
- http://git.0pointer.de/?p=avahi.git;a=commitdiff;h=3093047f1aa36bed8a37fa79004bf0ee287929f4
- http://admin.fedoraproject.org/updates/avahi-0.6.22-12.fc10
- http://www.synchlabs.com/advisories/200812-1.htm
- https://www.redhat.com/security/data/cve/CVE-2008-5081.html
- https://bugzilla.redhat.com/show_bug.cgi?id=475964
Frequently Asked Questions
What is the severity of REDHAT-BUG-475964?
The severity of REDHAT-BUG-475964 is classified as a remote denial of service vulnerability.
How do I fix REDHAT-BUG-475964?
To fix REDHAT-BUG-475964, update the avahi-daemon to the latest patched version available.
What does the vulnerability REDHAT-BUG-475964 affect?
REDHAT-BUG-475964 affects the avahi-daemon, specifically the handling of multicast DNS packets.
Can REDHAT-BUG-475964 be exploited remotely?
Yes, REDHAT-BUG-475964 can be exploited remotely by sending a crafted multicast DNS packet.
What versions of avahi-daemon are vulnerable to REDHAT-BUG-475964?
Versions of avahi-daemon prior to the latest update that addresses this issue are vulnerable to REDHAT-BUG-475964.
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- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2008-5081
- agent/severity
- agent/description
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- agent/tags
- agent/softwarecombine
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- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/avahi
- canonical/avahi autoip daemon