what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Asterisk Project Security Advisory - AST-2014-015

Asterisk Project Security Advisory - AST-2014-015
Posted Nov 21, 2014
Authored by Joshua Colp, Yaron Nahum | Site asterisk.org

Asterisk Project Security Advisory - The chan_pjsip channel driver uses a queue approach for actions relating to SIP sessions. There exists a race condition where actions may be queued to answer a session or send ringing AFTER a SIP session has been terminated using a CANCEL request. The code will incorrectly assume that the SIP session is still active and attempt to send the SIP response. The PJSIP library does not expect the SIP session to be in the disconnected state when sending the response and asserts.

tags | advisory
SHA-256 | 55c0f051137922494f6ce7feebfbe8e1ea4b9b2169a67c126fdff6d43bda124a

Asterisk Project Security Advisory - AST-2014-015

Change Mirror Download
               Asterisk Project Security Advisory - AST-2014-015

Product Asterisk
Summary Remote Crash Vulnerability in PJSIP channel driver
Nature of Advisory Denial of Service
Susceptibility Remote Unauthenticated Sessions
Severity Moderate
Exploits Known No
Reported On 30 October 2014
Reported By Yaron Nahum
Posted On 20 November 2014
Last Updated On November 20, 2014
Advisory Contact Joshua Colp <jcolp AT digium DOT com>
CVE Name Pending

Description The chan_pjsip channel driver uses a queue approach for
actions relating to SIP sessions. There exists a race
condition where actions may be queued to answer a session
or send ringing AFTER a SIP session has been terminated
using a CANCEL request. The code will incorrectly assume
that the SIP session is still active and attempt to send
the SIP response. The PJSIP library does not expect the SIP
session to be in the disconnected state when sending the
response and asserts.

Resolution Asterisk has been patched so any queued actions that occur
after a SIP session has been disconnected will not execute.

Affected Versions
Product Release
Series
Asterisk Open Source 12.x All versions
Asterisk Open Source 13.x All versions

Corrected In
Product Release
Asterisk Open Source 12.7.1, 13.0.1

Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2014-015-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2014-015-13.diff Asterisk
13

Links https://issues.asterisk.org/jira/browse/ASTERISK-24471

Asterisk Project Security Advisories are posted at
http://www.asterisk.org/security

This document may be superseded by later versions; if so, the latest
version will be posted at
http://downloads.digium.com/pub/security/AST-2014-015.pdf and
http://downloads.digium.com/pub/security/AST-2014-015.html

Revision History
Date Editor Revisions Made
November 20 2014 Joshua Colp Initial Revision

Asterisk Project Security Advisory - AST-2014-015
Copyright (c) 2014 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.



Login or Register to add favorites

File Archive:

December 2023

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Dec 1st
    11 Files
  • 2
    Dec 2nd
    0 Files
  • 3
    Dec 3rd
    0 Files
  • 4
    Dec 4th
    32 Files
  • 5
    Dec 5th
    10 Files
  • 6
    Dec 6th
    0 Files
  • 7
    Dec 7th
    0 Files
  • 8
    Dec 8th
    0 Files
  • 9
    Dec 9th
    0 Files
  • 10
    Dec 10th
    0 Files
  • 11
    Dec 11th
    0 Files
  • 12
    Dec 12th
    0 Files
  • 13
    Dec 13th
    0 Files
  • 14
    Dec 14th
    0 Files
  • 15
    Dec 15th
    0 Files
  • 16
    Dec 16th
    0 Files
  • 17
    Dec 17th
    0 Files
  • 18
    Dec 18th
    0 Files
  • 19
    Dec 19th
    0 Files
  • 20
    Dec 20th
    0 Files
  • 21
    Dec 21st
    0 Files
  • 22
    Dec 22nd
    0 Files
  • 23
    Dec 23rd
    0 Files
  • 24
    Dec 24th
    0 Files
  • 25
    Dec 25th
    0 Files
  • 26
    Dec 26th
    0 Files
  • 27
    Dec 27th
    0 Files
  • 28
    Dec 28th
    0 Files
  • 29
    Dec 29th
    0 Files
  • 30
    Dec 30th
    0 Files
  • 31
    Dec 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close