Date: Mon, 6 Jun 2011 13:22:02 -0400 (EDT) From: Josh Bressers <bressers@...hat.com> To: oss-security@...ts.openwall.com Cc: Russell Coker <rcoker@...hat.com>, Daniel Ruoso <daniel@...so.com>, "Steven M. Christey" <coley@...us.mitre.org> Subject: Re: CVE request -- coreutils -- tty hijacking possible in "su" via TIOCSTI ioctl ----- Original Message ----- > Hello Josh, Steve, vendors, > > based on Debian BTS report: >  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=628843 > (first CVE-2011-XXYY required for Debian case) > > looked more into original report: >  https://bugzilla.redhat.com/show_bug.cgi?id=173008 > > and the first paragraph of  suggests: > "When starting a program via "su - user -c program" the user session > can escape to the parent session by using the TIOCSTI ioctl to push > characters into the input buffer. This allows for example a non-root > session to push "chmod 666 /etc/shadow" or similarly bad commands into > the input buffer such that after the end of the session they are > executed." > > this should get a CVE-2005-YYZZ CVE id. > This really shouldn't get a CVE id. It's well known, and sadly not easy to fix. There are more details in this bug: https://bugzilla.redhat.com/show_bug.cgi?id=479145 I would classify this as an administration issue, not a flaw in su or sudo. If you're running arbitrary things, you're in far more trouble than this. I'm happy to let MITRE overrule me. -- JB
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