Date: Fri, 16 Mar 2012 18:50:04 +0100 From: Jan Lieskovsky <jlieskov@...hat.com> To: oss-security@...ts.openwall.com CC: Michal Schmidt <mschmidt@...hat.com> Subject: [Notification] CVE-2012-1174 systemd: TOCTOU race condition by removing user session Hello vendors, this is to inform you about the following flaw in systemd: A TOCTOU race condition was found in the way the systemd-logind login manager of the systemd, a system and service manager for Linux, performed removal of particular records related with user session upon user logout. A local attacker could use this flaw to conduct symbolic link attacks, potentially leading to removal of arbitrary system file. Upstream patch:  http://cgit.freedesktop.org/systemd/systemd/commit/?id=5ebff5337594d690b322078c512eb222d34aaa82 Red Hat Bugzilla entry:  https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-1174 Credit: Issue reported by Michal Schmidt of Red Hat. Flaw turnaround time: 16 days Thank you && Regards, Jan. -- Jan iankko Lieskovsky / Red Hat Security Response Team
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