Digium Asterisk 1.2/1.2.22/1.4.21.1/1.6 information disclosure

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.9	$0-$5k	0.00

A vulnerability was found in Digium Asterisk 1.2/1.2.22/1.4.21.1/1.6 (Communications System) and classified as problematic. This issue affects an unknown function. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Asterisk Open Source 1.2.x before 1.2.32, 1.4.x before 1.4.24.1, and 1.6.0.x before 1.6.0.8; Asterisk Business Edition A.x.x, B.x.x before B.2.5.8, C.1.x.x before C.1.10.5, and C.2.x.x before C.2.3.3; s800i 1.3.x before 1.3.0.2; and Trixbox PBX 2.6.1, when Digest authentication and authalwaysreject are enabled, generates different responses depending on whether a SIP username is valid, which allows remote attackers to enumerate valid usernames.

The weakness was published 09/04/2008 (Website). The advisory is shared at debian.org. The identification of this vulnerability is CVE-2008-3903 since 09/04/2008. The attack may be initiated remotely. The successful exploitation requires a simple authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 44817 (Debian DSA-1952-1 : asterisk - several vulnerabilities, end-of-life announcement in oldstable), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.

Upgrading to version 1.2.22 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (45059) and Tenable (44817). Similar entries are available at 36524, 45523 and 50758.

Productinfo

Type

Communications System

Vendor

Digium

Name

Asterisk

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 44817
Nessus Name: Debian DSA-1952-1 : asterisk - several vulnerabilities, end-of-life announcement in oldstable
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 66591
OpenVAS Name: Debian Security Advisory DSA 1952-1 (asterisk)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Asterisk 1.2.22
ISS Proventia IPS: 🔍

Timelineinfo

09/02/2008 🔍
09/04/2008 +2 days 🔍
09/04/2008 +0 days 🔍
09/04/2008 +0 days 🔍
04/02/2009 +210 days 🔍
05/04/2009 +32 days 🔍
05/11/2009 +7 days 🔍
03/17/2015 +2136 days 🔍
08/02/2021 +2330 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: debian.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2008-3903 (🔍)
OVAL: 🔍

X-Force: 45059
Vulnerability Center: 21971 - Digium Asterisk PBX Digest Authentication SIP User Names Enumeration Vulnerability, Low
SecurityFocus: 34353 - Asterisk Authentication SIP Response Remote Information Disclosure Vulnerability
Secunia: 34982 - Gentoo update for asterisk, Moderately Critical
Vupen: ADV-2009-0933

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/02/2021 08:19
Changes: 03/17/2015 16:11 (61), 12/24/2017 09:36 (15), 08/02/2021 08:19 (3)
Complete: 🔍