oss-security - CVE request -- libvirt: crash of libvirtd without guest agent configuration

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date: Fri, 19 Jul 2013 18:14:52 +0200
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Cc: libvirt-security@...hat.com
Subject: CVE request -- libvirt: crash of libvirtd without guest agent
 configuration

If users haven't configured guest agent then qemuAgentCommand() will
dereference a NULL 'mon' pointer.

A remote user able to issue commands to libvirt daemon could use this
flaw to crash libvirtd.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=986386
https://bugzilla.redhat.com/show_bug.cgi?id=984821
https://www.redhat.com/archives/libvir-list/2013-July/msg00992.html

Upstream fix:
http://libvirt.org/git/?p=libvirt.git;a=commit;h=96518d4316b711c72205117f8d5c967d5127bbb6

Thanks,
-- 
Petr Matousek / Red Hat Security Response Team

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.