Asterisk SIP Channel Driver Denial of Service (AST-2011-007)

Medium Nessus Network Monitor Plugin ID 5939

Synopsis

The remote VoIP server is vulnerable to a denial of service attack.

Description

The version of Asterisk running on the remote host is potentially affected by a denial of service vulnerability. If a remote attacker initiates a SIP call and the recipient picks up, the remote user can reply with a malformed Contact header that will cause Asterisk to crash.

Solution

Upgrade to Asterisk 1.8.4.2 or later.

See Also

http://downloads.asterisk.org/pub/security/AST-2011-007.html

Plugin Details

Severity: Medium

ID: 5939

File Name: 5939.prm

Family: Generic

Published: 2011/06/03

Modified: 2017/01/31

Dependencies: 3768

Nessus ID: 54971

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 6.5

Temporal Score: 4.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSSv3

Base Score: 6.3

Temporal Score: 5.5

Vector: CVSS3#AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS3#E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 2011/06/02

Vulnerability Publication Date: 2011/06/02

Reference Information

CVE: CVE-2011-2216

BID: 48096