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Asterisk: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201203-21 / Asterisk
Release Date March 28, 2012
Latest Revision March 28, 2012: 1
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/asterisk < >= All supported architectures

Related bugreports: #408431


Multiple vulnerabilities have been found in Asterisk, the worst of which may allow execution of arbitrary code.

2.  Impact Information


Asterisk is an open source telephony engine and toolkit.


Two vulnerabilities have been found in Asterisk:

  • The "milliwatt_generate()" function in app_milliwatt.c is vulnerable to a stack overrun (AST-2012-002).
  • The "ast_parse_digest()" function in utils.c is vulnerable to a stack-based buffer overflow (AST-2012-003).


A remote unauthenticated attacker could execute arbitrary code or cause 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 March 28, 2012

Summary: This is a Gentoo Linux Security Advisory

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