exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Asterisk Project Security Advisory - AST-2014-016

Asterisk Project Security Advisory - AST-2014-016
Posted Nov 21, 2014
Authored by Joshua Colp | Site asterisk.org

Asterisk Project Security Advisory - When handling an INVITE with Replaces message the res_pjsip_refer module incorrectly assumes that it will be operating on a channel that has just been created. If the INVITE with Replaces message is sent in-dialog after a session has been established this assumption will be incorrect. The res_pjsip_refer module will then hang up a channel that is actually owned by another thread. When this other thread attempts to use the just hung up channel it will end up using freed channel which will likely cause a crash.

tags | advisory
SHA-256 | 15a4222dbf1ccd2736fba02c722a20bb0de7e9d45367175f41e820c972765349

Asterisk Project Security Advisory - AST-2014-016

Change Mirror Download
               Asterisk Project Security Advisory - AST-2014-016

Product Asterisk
Summary Remote Crash Vulnerability in PJSIP channel driver
Nature of Advisory Denial of Service
Susceptibility Remote Unauthenticated Sessions
Severity Critical
Exploits Known No
Reported On 17 November 2014
Reported By Joshua Colp
Posted On 20 November 2014
Last Updated On November 20, 2014
Advisory Contact Joshua Colp <jcolp AT digium DOT com>
CVE Name Pending

Description When handling an INVITE with Replaces message the
res_pjsip_refer module incorrectly assumes that it will be
operating on a channel that has just been created. If the
INVITE with Replaces message is sent in-dialog after a
session has been established this assumption will be
incorrect. The res_pjsip_refer module will then hang up a
channel that is actually owned by another thread. When this
other thread attempts to use the just hung up channel it
will end up using freed channel which will likely cause a
crash.

Resolution If REFER support is not required the res_pjsip_refer module
can be unloaded to limit exposure otherwise the
res_pjsip_refer module has been patched so it will not allow
an in-dialog INVITE with Replaces message to be processed.

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-2014-016-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2014-016-13.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-2014-016.pdf and
http://downloads.digium.com/pub/security/AST-2014-016.html

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

Asterisk Project Security Advisory - AST-2014-016
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:

February 2024

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