FreeBSD : asterisk -- Crash on ACK from unknown endpoint (7fda7920-7603-11e6-b362-001999f8d30b)

high Nessus Plugin ID 93389

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

The Asterisk project reports :

Asterisk can be crashed remotely by sending an ACK to it from an endpoint username that Asterisk does not recognize. Most SIP request types result in an 'artificial' endpoint being looked up, but ACKs bypass this lookup. The resulting NULL pointer results in a crash when attempting to determine if ACLs should be applied.

This issue was introduced in the Asterisk 13.10 release and only affects that release.

This issue only affects users using the PJSIP stack with Asterisk.
Those users that use chan_sip are unaffected.

Solution

Update the affected package.

See Also

http://downloads.asterisk.org/pub/security/AST-2016-006.html

http://www.nessus.org/u?5d1fbb75

Plugin Details

Severity: High

ID: 93389

File Name: freebsd_pkg_7fda7920760311e6b362001999f8d30b.nasl

Version: 2.3

Type: local

Published: 9/9/2016

Updated: 1/4/2021

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:asterisk13, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 9/8/2016

Vulnerability Publication Date: 8/3/2016