oss-security - Re: CVE Request -- rpm -- Fails to remove the SUID/SGID bits on package upgrade (RH BZ#598775)

Follow @Openwall on Twitter for new release announcements and other news

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

Message-ID: <1769822633.1087291275590572969.JavaMail.root@zmail01.collab.prod.int.phx2.redhat.com>
Date: Thu, 3 Jun 2010 14:42:52 -0400 (EDT)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Cc: "Steven M. Christey" <coley@...us.mitre.org>,
        Panu Matilainen <pmatilai@...hat.com>,
        Jindrich Novy <jnovy@...hat.com>, Florian Festi <ffesti@...hat.com>,
        Matt McCutchen <matt@...tmccutchen.net>
Subject: Re: CVE Request -- rpm -- Fails to remove the
 SUID/SGID bits on package upgrade (RH BZ#598775)

----- "Jan Lieskovsky" <jlieskov@...hat.com> wrote:

> 
> Jan Lieskovsky wrote:
> > Hi Steve, vendors,
> > 
> >    Matt McCutchen pointed out a deficiency in the way rpm handled rpm
> >    package upgrades -- it failed to clear out the SUID/SGID bits of the
> >    old file by file replacement when privileged user performed package
> >    upgrade. Under certain circumstances, a local, authenticated user
> >    could use this flaw to escalate their privileges.
> 
> Maybe obvious and natural conclusion from previous post already, but Panu
> clarified yet, similar deficiency holds for dealing with posix file
> capabilities and SELinux contexts, i.e. they are not cleared after pkg
> upgrade. Not sure second CVE is needed for this, but if one is enough,
> wanted to explicitly mention this, so it can be described in the text of
> the CVE too.
> 

I'm going to give both of these the same CVE id. The issues are very
related, and I had look at the CWE guide, they both seem to fall under
"CWE-281: Improper Preservation of Permissions"

Steve, feel free to overrule me on this one.

CVE-2010-2059

Thanks.

-- 
    JB

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

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.