Bug 765773 (AST-2011-013, CVE-2011-4597) - CVE-2011-4597 asterisk: Possible to enumerate SIP usernames when general and user/peer NAT settings differed (AST-2011-013)
Summary: CVE-2011-4597 asterisk: Possible to enumerate SIP usernames when general and ...
Alias: AST-2011-013, CVE-2011-4597
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 765778 765779
TreeView+ depends on / blocked
Reported: 2011-12-09 11:40 UTC by Jan Lieskovsky
Modified: 2019-09-29 12:48 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2013-04-05 00:31:34 UTC

Attachments (Terms of Use)

Description Jan Lieskovsky 2011-12-09 11:40:20 UTC
An information disclosure flaw was found in the way Asterisk handled UDP requests in configurations using network address translation (NAT) for the SIP protocol. When the general configuration file section and user / peer configuration file section NAT settings differed, it was possible to enumerate SIP usernames if the request was sent to different port as that, specified in the Via header.

[1] http://www.asterisk.org/node/51693
[2] http://downloads.asterisk.org/pub/security/AST-2011-013.pdf
[3] http://lists.digium.com/pipermail/asterisk-dev/2011-November/thread.html#52191
[4] https://bugs.gentoo.org/show_bug.cgi?id=394095

Upstream bug report:
[5] https://issues.asterisk.org/jira/browse/ASTERISK-18862

Upstream review board request:
[6] https://reviewboard.asterisk.org/r/1591/

Upstream patch (for 1.8 branch):
[7] http://svnview.digium.com/svn/asterisk?view=revision&sortby=date&revision=345828

Comment 1 Jan Lieskovsky 2011-12-09 11:44:16 UTC
This issue affects the versions of the asterisk package, as shipped with Fedora release of 15 and 16. Please schedule an update.


This issue affects the version of the asterisk package, as shipped with Fedora EPEL 6. Please schedule an update.

Comment 2 Jan Lieskovsky 2011-12-09 12:02:35 UTC
CVE Request:

Comment 3 Jan Lieskovsky 2011-12-09 12:04:04 UTC
Created asterisk tracking bugs for this issue

Affects: fedora-all [bug 765778]
Affects: epel-6 [bug 765779]

Comment 4 Vincent Danen 2011-12-09 18:05:13 UTC
This was assigned the name CVE-2011-4597.

Comment 5 Fedora Update System 2012-03-31 03:09:59 UTC
asterisk- has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

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