Input validation error in Asterisk

1) Input validation error

EUVDB-ID: #VU33841

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-4046

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote #AU# to read and manipulate data.

Asterisk Open Source 11.x before 11.10.1 and 12.x before 12.3.1 and Certified Asterisk 11.6 before 11.6-cert3 allows remote authenticated Manager users to execute arbitrary shell commands via a MixMonitor action. Per: http://cwe.mitre.org/data/definitions/77.html "CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')"

Mitigation

Install update from vendor's website.

Vulnerable software versions

Asterisk Open Source: 11.6.0 - 11.6.1

CPE2.3

• cpe:2.3:a:digium_linux_support_services:asterisk:11.6.1:*:*:*:*:*:*:*

External links

https://downloads.asterisk.org/pub/security/AST-2014-006.html
https://packetstormsecurity.com/files/127088/Asterisk-Project-Security-Advisory-AST-2014-006.html
https://www.securityfocus.com/archive/1/532419/100/0/threaded

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.