Bug 353352 – <mail-mta/exim-4.74: privilege escalation vulnerability (CVE-2011-0017)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Keath 2011-01-31 23:01:33 UTC]

CVE-2011-0017 - check return value of setuid/setgid. This is a
      privilege escalation vulnerability whereby the Exim run-time user
      can cause root to append content of the attacker's choosing to
      arbitrary files.


Reproducible: Always

[Comment 1 Tim Sammut (RETIRED) 2011-02-01 04:18:37 UTC]

(In reply to comment #0)
> CVE-2011-0017 - check return value of setuid/setgid. This is a
>       privilege escalation vulnerability whereby the Exim run-time user
>       can cause root to append content of the attacker's choosing to
>       arbitrary files.
> 
> 
> Reproducible: Always
> 

Thanks for the report, Keath.

[Comment 2 Fabian Groffen 2011-02-01 08:05:50 UTC]

4.74 in the tree now, thanks

[Comment 3 Paweł Hajdan, Jr. (RETIRED) 2011-02-01 08:18:39 UTC]

Excellent. Arches, please stabilize =mail-mta/exim-4.74

[Comment 4 Agostino Sarubbo 2011-02-01 09:33:34 UTC]

Created attachment 261222 [details]
Build log

fails for me

[Comment 5 Kacper Kowalik (Xarthisius) (RETIRED) 2011-02-01 09:44:30 UTC]

(In reply to comment #4)
> Created an attachment (id=261222) [details]
> Build log
> 
> fails for me
Yeah, that's very funny pkg and for me that's ^^ 4th unique failure. I've also hit bug 287426, bug 352265 and as-needed failure with USE="sqlite". Apparently these are not regressions, so we could stable it. However, I'd rather see this package fixed (at least linking issues with dl and improper use of LDFLAGS) before stabilization or pmasked and dropped.

[Comment 6 Fabian Groffen 2011-02-01 10:11:52 UTC]

Dropping exim is not an option, so suggesting that shows little to no respect IMO.

Please open up bug(s) for your compilation problems, so we don't pollute this security bug with all of this.

Thanks.

[Comment 7 Jeroen Roovers (RETIRED) 2011-02-01 21:33:06 UTC]

Stable for HPPA.

[Comment 8 Andreas Schürch 2011-02-02 09:23:00 UTC]

I tested =mail-mta/exim-4.74-r1 on x86 and this one looks really good to go for me.

The only thing left that would be nice, would be that exim-acl should get auto-enabled if spf and/or srs is enabled, instead of just dying. (I just stumbled upon the last comment from Thomas Kahle over at bug #343221 a few mionutes ago! ;-)

[Comment 9 Kacper Kowalik (Xarthisius) (RETIRED) 2011-02-02 10:06:41 UTC]

ppc/ppc64 stable

[Comment 10 Christian Faulhammer (RETIRED) 2011-02-04 23:24:41 UTC]

stable x86, thanks Andreas

[Comment 11 Tobias Klausmann (RETIRED) 2011-02-05 20:17:50 UTC]

Stable on alpha.

[Comment 12 Markos Chandras (RETIRED) 2011-02-10 22:22:47 UTC]

amd64 done. Thanks Agostino

[Comment 13 Raúl Porcel (RETIRED) 2011-02-12 17:14:56 UTC]

ia64/sparc stable

[Comment 14 Tim Sammut (RETIRED) 2011-02-12 18:31:44 UTC]

Thanks, everyone. Added to existing GLSA request.

[Comment 15 Fabian Groffen 2011-05-08 09:40:21 UTC]

all versions <4.74 have been dropped from the tree

@security: please close this bug

[Comment 16 GLSAMaker/CVETool Bot 2011-06-24 00:34:59 UTC]

CVE-2011-0017 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0017):
  The open_log function in log.c in Exim 4.72 and earlier does not check the
  return value from (1) setuid or (2) setgid system calls, which allows local
  users to append log data to arbitrary files via a symlink attack.

[Comment 17 GLSAMaker/CVETool Bot 2014-01-27 12:37:07 UTC]

This issue was resolved and addressed in
 GLSA 201401-32 at http://security.gentoo.org/glsa/glsa-201401-32.xml
by GLSA coordinator Mikle Kolyada (Zlogene).