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

medium Nessus Plugin ID 76088

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Synopsis

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

Description

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.

Solution

Upgrade to Asterisk 1.8.28.1 / 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.

Plugin Details

Severity: Medium

ID: 76088

File Name: asterisk_ast_2014_007.nasl

Version: 1.10

Type: remote

Family: Misc.

Published: 6/17/2014

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: Settings/ParanoidReport, asterisk/sip_detected

Exploit Ease: No known exploits are available

Patch Publication Date: 6/12/2014

Vulnerability Publication Date: 6/12/2014

Reference Information

CVE: CVE-2014-4047

Detections

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