Digium Asterisk up to 1.4.24.1 Default Configuration config

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability classified as problematic has been found in Digium Asterisk up to 1.4.24.1 (Communications System). This affects an unknown part of the component Default Configuration. The manipulation with an unknown input leads to a config vulnerability. CWE is classifying the issue as CWE-16. This is going to have an impact on confidentiality. The summary by CVE is:

The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536.

The weakness was shared 07/06/2011 (Website). It is possible to read the advisory at xforce.iss.net. This vulnerability is uniquely identified as CVE-2011-2666 since 07/06/2011. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592.004 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 56921 (Asterisk Invalid INVITE / REGISTER SIP Request Username Enumeration (AST-2011-011)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r.

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (68472) and Tenable (56921). The entry 57877 is related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Config
CWE: CWE-16
ATT&CK: T1592.004

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56921
Nessus Name: Asterisk Invalid INVITE / REGISTER SIP Request Username Enumeration (AST-2011-011)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 71471
OpenVAS Name: Debian Security Advisory DSA 2493-1 (asterisk)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/28/2011 🔍
07/06/2011 +8 days 🔍
07/06/2011 +0 days 🔍
07/06/2011 +0 days 🔍
11/22/2011 +139 days 🔍
03/23/2015 +1217 days 🔍
02/10/2019 +1420 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: xforce.iss.net
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2666 (🔍)
OVAL: 🔍

X-Force: 68472
SecurityFocus: 47676

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 02/10/2019 10:57
Changes: 03/23/2015 16:50 (62), 02/10/2019 10:57 (3)
Complete: 🔍

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