Asterisk HTTP Session Handling DoS (AST-2014-007)

Medium Nessus Plugin ID 76088


A telephony application running on the remote host is affected by a denial of service vulnerability.


According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by a denial of service vulnerability. A flaw exists in the handling of TCP and TLS connections when the connection is initiated but not completed. A remote attacker could repeatedly send such requests that may result in a denial of service.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.


Upgrade to Asterisk / 11.10.1 / 12.3.1 / Certified Asterisk 1.8.15-cert6 / 11.6-cert3, or apply the appropriate patch listed in the Asterisk advisory.

See Also

Plugin Details

Severity: Medium

ID: 76088

File Name: asterisk_ast_2014_007.nasl

Version: $Revision: 1.8 $

Type: remote

Family: Misc.

Published: 2014/06/17

Modified: 2016/11/11

Dependencies: 63202

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: asterisk/sip_detected, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/06/12

Vulnerability Publication Date: 2014/06/12

Reference Information

CVE: CVE-2014-4047

OSVDB: 108084