Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 21 Sep 2010 15:22:07 -0400 (EDT)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Cc: coley <coley@...re.org>
Subject: Re: Minor security flaw with pam_xauth

----- "Josh Bressers" <bressers@...hat.com> wrote:
> 
> > The same commit also introduces previously-missing privilege switching
> > into pam_env and pam_mail.  Unfortunately, this pam_env and pam_mail
> > fix is incomplete: it only switches the fsuid (should also switch fsgid
> > (or egid) and groups), and it fails to check the return value from
> > setfsuid() (doing so would require duplicate calls to setfsuid(), like
> > we do in libtcb, or switching of euid instead - yet it is desirable).
> > 
> 
> This one is a bit on the tricky side. I'm going to call it "improper
> setfsuid use" so we can use just one CVE instead of two (as the flaws
> are
> related):
> 
> Use CVE-2010-3430
> 

MITRE votes for two, so here goes:

Let's use CVE-2010-3430 for the missing setfsgid.

Use CVE-2010-3431 for the missing return checks on setfsuid.

Thanks Steve.

-- 
    JB

Powered by blists - more mailing lists

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.