Secunia Security Advisory - A vulnerability has been reported in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service).
98f6d3372f216213a2d3d4818b4805500947c8eef6351a657ce54dcd3ae86ade
----------------------------------------------------------------------
BETA test the new Secunia Personal Software Inspector!
The Secunia PSI detects installed software on your computer and
categorises it as either Insecure, End-of-Life, or Up-To-Date.
Effectively enabling you to focus your attention on software
installations where more secure versions are available from the
vendors.
Download the free PSI BETA from the Secunia website:
https://psi.secunia.com/
----------------------------------------------------------------------
TITLE:
Asterisk Voicemail IMAP Backend Invalid MIME Denial of Service
SECUNIA ADVISORY ID:
SA26601
VERIFY ADVISORY:
http://secunia.com/advisories/26601/
CRITICAL:
Less critical
IMPACT:
DoS
WHERE:
>From remote
SOFTWARE:
Asterisk 1.x
http://secunia.com/product/2155/
DESCRIPTION:
A vulnerability has been reported in Asterisk, which can be exploited
by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error when handling emails with
a malformed MIME body. This can be exploited to crash the service by
sending a specially crafted email to a user and tricking him into
listening to the voicemail.
Successful exploitation requires that the IMAP backend for the
voicemail feature is used. Reportedly, other backends are not
affected.
The vulnerability is reported in version 1.4.5 - 1.4.11. Other
versions may also be affected.
SOLUTION:
Reportedly, this will be fixed in version 1.4.12.
The vendor has released a patch:
http://lists.digium.com/pipermail/asterisk-commits/2007-August/015743.html
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Kevin Stewart.
ORIGINAL ADVISORY:
http://downloads.digium.com/pub/asa/AST-2007-021.html
----------------------------------------------------------------------
About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.
Subscribe:
http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/
Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.
----------------------------------------------------------------------