Digium Asterisk up to Beta6 IAX2 Channel Driver denial of service

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.
6.7$0-$5k0.00

A vulnerability, which was classified as critical, was found in Digium Asterisk up to Beta6 (Communications System). This affects an unknown functionality of the component IAX2 Channel Driver. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.

The bug was discovered 07/23/2007. The weakness was shared 07/23/2007 by Will Drewry (Website). The advisory is shared at secunia.com. This vulnerability is uniquely identified as CVE-2007-4103 since 07/30/2007. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Ruby. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 31294 (GLSA-200802-11 : Asterisk: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading to version 1.4.7 eliminates this vulnerability. A possible mitigation has been published 8 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (35682) and Tenable (31294). The entries 37887, 37886, 37885 and 37884 are related to this item.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 31294
Nessus Name: GLSA-200802-11 : Asterisk: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 60448
OpenVAS Name: Gentoo Security Advisory GLSA 200802-11 (asterisk)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Asterisk 1.4.7

Timelineinfo

07/18/2007 🔍
07/18/2007 +0 days 🔍
07/23/2007 +5 days 🔍
07/23/2007 +0 days 🔍
07/30/2007 +6 days 🔍
07/30/2007 +0 days 🔍
07/30/2007 +0 days 🔍
07/31/2007 +0 days 🔍
02/26/2008 +210 days 🔍
02/27/2008 +1 days 🔍
03/04/2008 +6 days 🔍
03/15/2015 +2567 days 🔍
08/06/2019 +1605 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: secunia.com⛔
Researcher: Will Drewry
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-4103 (🔍)
X-Force: 35682
SecurityTracker: 1018472
Vulnerability Center: 17766 - Asterisk Open 1.2-1.2.23, 1.4-1.4.9 IAX2 Channel Driver Remote DoS, Low
SecurityFocus: 24950 - Asterisk Multiple Remote Denial of Service Vulnerabilities
Secunia: 26274
OSVDB: 38197 - Asterisk IAX2 Channel Driver (chan_iax2) Incomplete Connection Saturation Remote DoS
Vupen: ADV-2007-2701

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/15/2015 15:58
Updated: 08/06/2019 09:28
Changes: 03/15/2015 15:58 (83), 08/06/2019 09:28 (9)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!