Vulnerability CVE-2009-0758
Published: 2009-03-03   Modified: 2012-02-13

Description:
The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets, which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm.

Type:

CWE-399

 (Resource Management Errors)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.8/10
6.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Avahi -> Avahi-daemon 

 References:
http://www.securityfocus.com/bid/33946
http://www.openwall.com/lists/oss-security/2009/03/02/1
http://www.mandriva.com/security/advisories?name=MDVSA-2009:076
http://www.debian.org/security/2010/dsa-2086
http://secunia.com/advisories/38420
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00000.html
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=517683
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