Microsoft Windows 7/Server 2008/Vista SChannel Client Certificate Request input validation

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.
7.2$0-$5k0.00

A vulnerability classified as critical has been found in Microsoft Windows 7/Server 2008/Vista (Operating System). Affected is an unknown functionality of the component SChannel Client. The manipulation as part of a Certificate Request leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

The Secure Channel (aka SChannel) security package in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7, when IIS 7.x is used, does not properly process client certificates during SSL and TLS handshakes, which allows remote attackers to cause a denial of service (LSASS outage and reboot) via a crafted packet, aka "TLSv1 Denial of Service Vulnerability."

The weakness was shared 10/12/2010 with Mu Dynamics as MS10-085 as confirmed bulletin (Technet). The advisory is available at microsoft.com. This vulnerability is traded as CVE-2010-3229 since 09/03/2010. 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.

The vulnerability scanner Nessus provides a plugin with the ID 49962 (MS10-085: Vulnerability in SChannel Could Allow Denial of Service (2207566)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l.

Upgrading eliminates this vulnerability. Applying the patch MS10-085 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 17050.

The vulnerability is also documented in the databases at X-Force (62149) and Tenable (49962). The entries 4195, 4198, 4192 and 4193 are related to this item.

Productinfo

Type

Vendor

Name

Version

License

Support

  • end of life (old version)

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: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 49962
Nessus Name: MS10-085: Vulnerability in SChannel Could Allow Denial of Service (2207566)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 901164
OpenVAS Name: Microsoft Windows SChannel Denial of Service Vulnerability (2207566)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: MS10-085
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

09/03/2010 🔍
10/12/2010 +39 days 🔍
10/12/2010 +0 days 🔍
10/12/2010 +0 days 🔍
10/12/2010 +0 days 🔍
10/13/2010 +0 days 🔍
10/13/2010 +0 days 🔍
10/13/2010 +0 days 🔍
10/13/2010 +0 days 🔍
10/19/2010 +6 days 🔍
03/18/2021 +3803 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS10-085
Organization: Mu Dynamics
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-3229 (🔍)
OVAL: 🔍

X-Force: 62149
Vulnerability Center: 27634 - [MS10-085]Microsoft Windows Schannel Remote DoS Vulnerability via Crafted Network Packets, Medium
SecurityFocus: 43780 - Microsoft Windows SChannel TLSv1 Remote Denial of Service Vulnerability
Secunia: 41787 - Microsoft Windows SChannel Client Certificate Request Denial of Service, Moderately Critical
OSVDB: 68560 - Microsoft Windows SChannel TLSv1 Crafted Client Certificate Request DoS

scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍

Entryinfo

Created: 10/19/2010 02:00
Updated: 03/18/2021 11:52
Changes: 10/19/2010 02:00 (88), 04/07/2017 12:38 (10), 03/18/2021 11:52 (3)
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!