Digium Asterisk 1.8.28.0/1.8.32.0/11.6.0/11.14.0/12.7.0 DB Dialplan Function access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

A vulnerability was found in Digium Asterisk 1.8.28.0/1.8.32.0/11.6.0/11.14.0/12.7.0 (Communications System). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component DB Dialplan Function. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 11/20/2014 by Gareth Palmer as AST-2014-018 as confirmed advisory (Website). It is possible to read the advisory at downloads.asterisk.org. This vulnerability is known as CVE-2014-8418 since 10/22/2014. The exploitation appears to be easy. The attack can be launched remotely. Required for exploitation is a single authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

The DB dialplan function when executed from an external protocol (for instance AMI), could result in a privilege escalation.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 79438 (Asterisk Multiple Vulnerabilities (AST-2014-012 / AST-2014-018)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc..

Upgrading to version 1.8.32.1, 11.14.1, 12.7.1 or 13.0.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Asterisk now inhibits the DB function from being executed from an external interface if the live_dangerously option is set to no.

The vulnerability is also documented in the databases at X-Force (98869) and Tenable (79438).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 79438
Nessus Name: Asterisk Multiple Vulnerabilities (AST-2014-012 / AST-2014-018)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 18627
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201412-51
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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0-Day Time: 🔍
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Upgrade: Asterisk 1.8.32.1/11.14.1/12.7.1/13.0.1

Timelineinfo

10/22/2014 🔍
11/17/2014 +26 days 🔍
11/17/2014 +0 days 🔍
11/17/2014 +0 days 🔍
11/20/2014 +3 days 🔍
11/20/2014 +0 days 🔍
11/21/2014 +1 days 🔍
11/24/2014 +3 days 🔍
11/24/2014 +0 days 🔍
12/09/2014 +15 days 🔍
02/27/2022 +2637 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: AST-2014-018
Researcher: Gareth Palmer
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8418 (🔍)
X-Force: 98869 - Asterisk DB dialplan function privilege escalation, Medium Risk
SecurityTracker: 1031251 - Asterisk DB Dialplan Function Lets Remote Authenticated Users Gain Elevated Privileges
Vulnerability Center: 47477 - Asterisk Open Source and Certified Asterisk Remote Host Privileges via a Call From an External Protocol, High
SecurityFocus: 71227 - Multiple Asterisk Products 'funcs/func_db.c' Remote Privilege Escalation Vulnerability

Entryinfo

Created: 11/24/2014 09:38
Updated: 02/27/2022 08:11
Changes: 11/24/2014 09:38 (73), 12/24/2017 09:37 (13), 02/27/2022 08:09 (3), 02/27/2022 08:11 (1)
Complete: 🔍
Cache ID: 18:392:103

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