Ludwig Nussel reported: [1] http://www.openwall.com/lists/oss-security/2010/06/23/4 a deficiency in the way avahi daemon processed packets with corrupted checksum(s). A remote attacker on the same local are network (LAN) could send a DNS packet with broken checksum, that would cause avahi-daemon to exit unexpectedly due to a failed assertion check. Different vulnerability than CVE-2008-5081.
Created attachment 426335 [details] Proposed patch by Ludwig Nussel (from [1])
Created avahi tracking bugs for this issue Affects: fedora-all [bug 607297]
This has been assigned CVE-2010-2244.
Lennart, have you had a chance to review the patch Ludwig provided to fix this yet?
This issue affects the version of the avahi package, as shipped with Red Hat Enterprise Linux 5. This issue affects the versions of the avahi package, as shipped with Fedora releases of 12 and 13.
Lennart, any reaction to c#5? Thanks, Jan. -- Jan iankko Lieskovsky / Red Hat Security Response Team
Yes, the patch is good and merged upstream. I also did a new release upstream with this patch included, and uploaded that to Rawhide.
avahi-0.6.25-7.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/avahi-0.6.25-7.fc13
avahi-0.6.25-7.fc12 has been submitted as an update for Fedora 12. http://admin.fedoraproject.org/updates/avahi-0.6.25-7.fc12
commited and built for rhel 5.5.z and rhel 5.6 now.
nvr are as follows: rhel5.5.z: avahi-0.6.16-9.el5.5 rhel5.6: avahi-0.6.16-9.el5
i uploaded a fix for rhel6 now too.
avahi-0.6.25-7.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
avahi-0.6.25-7.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in following products: Red Hat Enterprise Linux 5 Via RHSA-2010:0528 https://rhn.redhat.com/errata/RHSA-2010-0528.html