Bug 399085 – <sys-libs/glibc-2.15-r2 : EMFILE Error Handling Two Denial of Service Vulnerabilities (CVE-2011-4609)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2012-01-16 15:43:41 UTC]

From secunia security advisory at $URL:

Description:
The vulnerabilities are caused due to errors within the "rendezvous_request()" and "svcudp_recv()" functions when handling EMFILE errors, which can be exploited to cause high CPU consumption and render the system unresponsive.

The vulnerabilities are reported in version 2.14.1. Other versions may also be affected.


Solution:
Unpatched.
Restrict access to RPC services to trusted hosts only.

[Comment 1 Thomas Deutschmann (RETIRED) 2013-01-01 16:00:14 UTC]

Hi,

this bug was fixed on 28th Nov 2012 by upstream. See

http://sourceware.org/bugzilla/show_bug.cgi?id=14889

Patch:

http://sourceware.org/git/?p=glibc.git;a=commit;h=14bc93a967e62abf8cf2704725b6f76619399f83

[Comment 2 Agostino Sarubbo 2013-01-01 17:07:12 UTC]

(In reply to comment #1)
> Hi,
> 
> this bug was fixed on 28th Nov 2012 by upstream. See
> 
> http://sourceware.org/bugzilla/show_bug.cgi?id=14889
> 
> Patch:
> 
> http://sourceware.org/git/?p=glibc.git;a=commit;
> h=14bc93a967e62abf8cf2704725b6f76619399f83

thanks for the notice

[Comment 3 GLSAMaker/CVETool Bot 2013-05-09 11:35:33 UTC]

CVE-2011-4609 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4609):
  The svc_run function in the RPC implementation in glibc before 2.15 allows
  remote attackers to cause a denial of service (CPU consumption) via a large
  number of RPC connections.

[Comment 4 SpanKY 2014-02-18 19:16:18 UTC]

this is in glibc-2.17 which is stable now

[Comment 5 Sergey Popov 2014-02-27 14:13:14 UTC]

Always covered by GLSA 201312-01