Description
The manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.openwall.com/lists/oss-security/2016/09/30/1 ↗
- https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet ↗
- https://github.com/systemd/systemd/issues/4234#issuecomment-250441246 ↗
- http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.html ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1381911 ↗
- http://rhn.redhat.com/errata/RHSA-2017-0003.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.html ↗
- http://www.securitytracker.com/id/1037320 ↗
- http://www.securityfocus.com/bid/93250 ↗
- https://rhn.redhat.com/errata/RHBA-2015-2092.html ↗