oss-security - CVE request: kernel: exit_notify: kill the wrong capable(CAP

Openwall Project		/home Owl JtR Pro crypt pam_passwdqc tcb phpass scanlogd popa3d msulogin / Linux BIND / advisories presentations / services donations / wordlists passwords / NEWS community lists Wiki CVSweb mirrors signatures
bringing security into open environments

Password Recovery Resources on the Net

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

Date: Tue, 07 Apr 2009 13:37:23 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>,
        Chris Wright <chrisw@...hat.com>, Greg KH <greg@...ah.com>
Subject: CVE request: kernel: exit_notify: kill the wrong capable(CAP_KILL)
 check

A malicious application can execute a setuid binary before exit. This
would mean that we will not reset the ->exit_signal to SIGCHLD unless
the binary drops CAP_KILL.

https://bugzilla.redhat.com/show_bug.cgi?id=493771
http://git.kernel.org/linus/432870dab85a2f69dc417022646cb9a70acf7f94

Chris/Greg, we probably need this in -stable.

Thanks, Eugene
-- 
Eugene Teo, RHCA, RHCSS / Red Hat Security Response Team

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