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Asterisk: Denial of Service


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201202-06 / asterisk
Release Date February 22, 2012
Latest Revision February 22, 2012: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/asterisk < >= All supported architectures

Related bugreports: #399507


A vulnerability in Asterisk could allow a remote attacker to cause a Denial of Service condition.

2.  Impact Information


Asterisk is an open source telephony engine and toolkit.


A vulnerability has been found in Asterisk's handling of certain encrypted streams where the res_srtp module has been loaded but video support has not been enabled.


A remote attacker could send a specially crafted SDP message to the Asterisk daemon, possibly resulting in a Denial of Service condition.

3.  Resolution Information


There is no known workaround at this time.


All Asterisk users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/asterisk-"

4.  References


Page updated February 22, 2012

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