OpenSSL up to 0.9.8c ASN.1 Parser resource management

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.
6.5$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in OpenSSL. Affected by this vulnerability is an unknown functionality of the component ASN.1 Parser. The manipulation results in resource management. This vulnerability is cataloged as CVE-2006-2937. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in OpenSSL (Network Encryption Software). Affected is an unknown code block of the component ASN.1 Parser. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

OpenSSL 0.9.7 before 0.9.7l and 0.9.8 before 0.9.8d allows remote attackers to cause a denial of service (infinite loop and memory consumption) via malformed ASN.1 structures that trigger an improperly handled error condition.

The bug was discovered 09/28/2006. The weakness was shared 09/28/2006 by Dr. S. N. Henson with Open Network Security (Website). The advisory is available at openssl.org. This vulnerability is traded as CVE-2006-2937 since 06/09/2006. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1367 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 22727 (Debian DSA-1185-2 : openssl - denial of service), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185040 (HP-UX Running OpenSSL Multiple Vulnerabilities (HPSBUX02174)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at openssl.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 years after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 5077.

The vulnerability is also documented in the databases at X-Force (29228), Tenable (22727), SecurityFocus (BID 28276†), OSVDB (29260†) and Secunia (SA31531†). The entries VDB-2575, VDB-2576, VDB-2577 and VDB-3813 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 22727
Nessus Name: Debian DSA-1185-2 : openssl - denial of service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57478
OpenVAS Name: Debian Security Advisory DSA 1185-1 (openssl)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: openssl.org
TippingPoint: 🔍
SourceFire IPS: 🔍

Timelineinfo

12/31/2002 🔍
06/09/2006 +1256 days 🔍
09/28/2006 +111 days 🔍
09/28/2006 +0 days 🔍
09/28/2006 +0 days 🔍
09/28/2006 +0 days 🔍
09/28/2006 +0 days 🔍
09/29/2006 +0 days 🔍
09/29/2006 +0 days 🔍
10/03/2006 +4 days 🔍
10/14/2006 +11 days 🔍
10/02/2007 +353 days 🔍
03/17/2008 +167 days 🔍
08/18/2008 +154 days 🔍
01/20/2025 +5999 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: openssl.org
Researcher: Dr. S. N. Henson
Organization: Open Network Security
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-2937 (🔍)
GCVE (CVE): GCVE-0-2006-2937
GCVE (VulDB): GCVE-100-2574

OVAL: 🔍

CERT: 🔍
X-Force: 29228 - OpenSSL ASN.1 error denial of service, Medium Risk
SecurityFocus: 28276 - VMware Server 1.0.5 and Workstation 6.0.3 Multiple Vulnerabilities
Secunia: 31531 - Reflection for Secure IT Multiple Vulnerabilities, Moderately Critical
OSVDB: 29260 - OpenSSL Malformed ASN.1 Structure Resource Consumption DoS
SecurityTracker: 1016943
Vulnerability Center: 12814 - [cisco-amb-20061108-openssl, cisco-sr-20061108-openssl, cisco-air-20061108-openssl] OpenSSL Remote DoS Via Malformed ASN.1 Structure and Crafted Public Keys, High
Vupen: ADV-2008-2396

See also: 🔍

Entryinfo

Created: 09/29/2006 10:44
Updated: 01/20/2025 20:03
Changes: 09/29/2006 10:44 (106), 07/08/2019 22:19 (2), 01/20/2025 20:03 (17)
Complete: 🔍
Cache ID: 216:8C2:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!