Digium Asterisk up to 1.2.10 Call Request 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.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Digium Asterisk up to 1.2.10. Impacted is an unknown function of the component Call Request Handler. The manipulation leads to denial of service. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Digium Asterisk up to 1.2.10 (Communications System) and classified as critical. This issue affects an unknown functionality of the component Call Request Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was released 07/17/2006 by Tom Cross with ISS X-Force (Website). The advisory is shared at xforce.iss.net. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

We expect the 0-day to have been worth approximately $5k-$25k.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.digium.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (25847), SecurityFocus (BID 19009†), OSVDB (27346†) and Secunia (SA21071†). networkworld.com is providing further details. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Communications System

Vendor

• Digium

Name

• Asterisk

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10

License

• open-source

Website

• Vendor: https://www.digium.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
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: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: ftp.digium.com

Timelineinfo

07/17/2006 🔍
07/17/2006 +0 days 🔍
07/17/2006 +0 days 🔍
07/20/2006 +2 days 🔍
12/24/2017 +4175 days 🔍

Sourcesinfo

Vendor: digium.com

Advisory: xforce.iss.net
Researcher: Tom Cross
Organization: ISS X-Force
Status: Confirmed

GCVE (VulDB): GCVE-100-2381
X-Force: 25847 - Asterisk PBX IAX2 protocol call request flood denial of service, Medium Risk
SecurityFocus: 19009 - Asterisk IAX2 Request Flood Remote Denial of Service Vulnerability
Secunia: 21071 - Asterisk IAX2 Call Request Flooding Denial of Service, Less Critical
OSVDB: 27346 - Asterisk IAX2 Call Request Flood Remote DoS

Misc.: 🔍

Entryinfo

Created: 07/20/2006 12:45
Updated: 12/24/2017 09:33
Changes: 07/20/2006 12:45 (62), 12/24/2017 09:33 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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