Remote Crash Vulnerability in Milliwatt Application

[Paul Belanger]

An attacker can cause Asterisk to crash in one of two ways:
1. A dialplan uses the Milliwatt application with 'o' option
2. The internal_timing opion in asterisk.conf is off
3. The attacker sends a large audio packet. The number of samples in the audio packet determines the number of internal data samples that are copied into the buffer. This overruns the buffer, potentially causing a crash.
OR
1. A diaplan uses the Milliwatt application with the 'o' option
2. The attacker negotiates a media format with a sampling rate greater than 32kHz. The application will attempt to generate an audio packet using the sample rate of the negotiated format, where the sample rate will require a number of data points greater then the size of the buffer. Again, the the application copies a number of internal data samples into the buffer that are greater then the size of the buffer, potentially causing a crash.

Note that the latter attack vector is only possible in Asterisk 10, as it supports codecs with a sample rate greater then 32kHz.

http://downloads.asterisk.org/pub/security/AST-2012-002.html

[Launchpad Janitor (janitor)]

This bug was fixed in the package asterisk - 1:1.8.10.1~dfsg-1ubuntu1

---------------
asterisk (1:1.8.10.1~dfsg-1ubuntu1) precise; urgency=low

  * Merge from Debian unstable. (LP: #987772, #956578, #956580, #956581)
  * Remaining changes:
    - debian/asterisk.init: chown /dev/dahdi
    - debian/backports/hardy: add file
    - debian/backports/asterisk.init.hardy: add file
    - Fix building on armhf with debian/patches/armhf-fixes:
      + Flatten linux-gnueabihf in configure to linux-gnu, in
        the same way that's already done for linux-gnueabi
  * Changes dropped from Ubuntu delta as no longer applicable:
    - debian/patches/backport-r312866.diff: Backported from upstream
    - debian/control: Build-depend on hardening-wrapper, now handled
      by dpkg-buildflags
    - debian/rules: Make use of hardening-wrapper

asterisk (1:1.8.10.1~dfsg-1) unstable; urgency=low

  [ Victor Seva ]
  * Update backports/squeeze script gmime2.6 -> gmime2.4

  [ Tzafrir Cohen ]
  * New upstrean bug-fix release.
    - Fixes "[CVE-2012-1183 - CVE-2012-1184] Asterisk: AST-2012-002 and
      AST-2012-003 flaws" (Closes: #664411).
  * Patch gmime2.6 (Closes: #663998, #664004), also fixed Build-Depends.
  * Remove the text of RFC 3951 from the tarball. (Closes: #665937)

asterisk (1:1.8.10.0~dfsg-1) unstable; urgency=low

  [ Tzafrir Cohen ]
  * New upstrean release.
  * Build-depend on sqlite3 as well (Closes: #531759).

  [ Paul Belanger ]
  * debian/patch/chan_iax2-detach-thread-on-non-stop-exit:
    - Dropped; merged upstream

  [ Mark Purcell ]
  * New Release:
    - Fixes "SHA-1 code is doesn't allow modification" (Closes: #643703)
    - Fixes "Placing calls on hold fails with some IP phones" (Closes: #632518)
    - Fixes "Pass the correct value to ast_timer_set_rate() for IAX2
    trunking." (Closes: #661974)
    - Fixes "Call quality on IAX significantly worse than SIP" (Closes: #481702)
    - Fixes "New upstream release: 1.8.2.2" (Closes: #610811)
    - Fixes "asterisk german number pronunciation" (Closes: #402991)
    - Fixes "Why using version 1.6.2.9 - it's not LTS" (Closes: #612147)
    - Fixes "SRTP/ZRTP support for Asterisk" (Closes: #577686)
    - Fixes "fails to register SIP channels on ARM" (Closes: #660240)
  * export CFLAGS LDFLAGS
    - Fixes "Hardening flags missing for menuselect" (Closes: #664086)
    - Fixes "enable hardening options" (Closes: #542741)

asterisk (1:1.8.8.2~dfsg-1) unstable; urgency=high

  * New upstream release, fixes AST-2012-001 (Closes: #656596).
  * Use CFLAGS and LDFLAGS from dpkg-buildflags (Closes: #653944).

asterisk (1:1.8.8.0~dfsg-1) unstable; urgency=high

  [ Faidon Liambotis ]
  * Fix Breaks/Conflicts to contain the epoch.
  * Urgency high since this resulted in file conflicts when upgrading from
    stable.
  * Patch reenable-pri-optional: Backport a patch from upstream to fix
    several PRI features being compiled-out and hence disabled.
  * Bump libpri-dev dependency to 1.4.12; it is not strictly needed but extra
    functionality is enabled at build-time.

  [ Tzafrir Cohen ]
  * New upstream release. Closes: #651552.
    - Patch reenable-pri-optional dropped: included upstream.
  * Officially r...