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[ GLSA 200901-11 ] Avahi: Denial of Service
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GLSA
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Joined: 12 May 2004
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PostPosted: Thu Jan 15, 2009 12:26 am    Post subject: [ GLSA 200901-11 ] Avahi: Denial of Service Reply with quote

Gentoo Linux Security Advisory

Title: Avahi: Denial of Service (GLSA 200901-11)
Severity: normal
Exploitable: remote
Date: January 14, 2009
Bug(s): #250913
ID: 200901-11

Synopsis


A Denial of Service vulnerability has been discovered in Avahi.


Background


Avahi is a system that facilitates service discovery on a local
network.


Affected Packages

Package: net-dns/avahi
Vulnerable: < 0.6.24
Unaffected: >= 0.6.24
Architectures: All supported architectures


Description


Hugo Dias reported a failed assertion in the
originates_from_local_legacy_unicast_socket() function in
avahi-core/server.c when processing mDNS packets with a source port of
0.


Impact


A remote attacker could send specially crafted packets to the daemon,
leading to its crash.


Workaround


There is no known workaround at this time.


Resolution


All Avahi users should upgrade to the latest version:
Code:
# emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dns/avahi-0.6.24"


References

CVE-2008-5081


Last edited by GLSA on Sun Mar 11, 2012 4:27 am; edited 2 times in total
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