Asterisk: Multiple vulnerabilities

Background

Asterisk is an open source telephony engine and toolkit.

Description

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).

Impact

A remote unauthenticated attacker could execute arbitrary code or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Asterisk users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/asterisk-1.8.10.1"