CVE-2009-0758

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
avahi	10.04 LTS lucid	Not affected
	9.10 karmic	Not affected
	9.04 jaunty	Fixed 0.6.23-4ubuntu4.1
	8.10 intrepid	Ignored
	8.04 LTS hardy	Fixed 0.6.22-2ubuntu4.2
	7.10 gutsy	Ignored
	6.06 LTS dapper	Ignored

Notes

mdeslaur

low priority as reflector is not enabled by default

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
avahi	Vendor: http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=server.patch;att=1;bug=517683 Upstream: http://git.0pointer.de/?p=avahi.git;a=commit;h=6fabf9d5189cf0efb86af1cd57e5399f8e31112a

Status

Notes

mdeslaur

Patch details

References

Related Ubuntu Security Notices (USN)

Other references