Microsoft Windows Server 2008/Vista SMB Processor EducatedScholar 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.
7.0$0-$5k0.00

A vulnerability was found in Microsoft Windows Server 2008/Vista (Operating System). It has been rated as critical. This issue affects some unknown processing of the component SMB Processor. The manipulation with an unknown input leads to a denial of service vulnerability (EducatedScholar). Using CWE to declare the problem leads to CWE-399. Impacted is confidentiality, integrity, and availability.

The weakness was released 09/08/2009 by Laurent GaffiƩ as MS09-050 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The identification of this vulnerability is CVE-2009-3103 since 09/08/2009. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by laurent gaffie in Python and been published before and not just after the advisory. It is declared as highly functional. The exploit is available at securityfocus.com. 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 $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 40887 (MS09-050: Microsoft Windows SMB2 _Smb2ValidateProviderCallback() Vulnerability (975497) (uncredentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context remote. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90527 (Microsoft Server Message Block (SMBv2) Remote Code Execution Vulnerability (MS09-050) and Shadow Brokers (EDUCATEDSCHOLAR)).

Upgrading eliminates this vulnerability. Applying the patch MS09-050 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 2 months after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11792.

The vulnerability is also documented in the databases at X-Force (53090), SecurityTracker (ID 1022848), Vulnerability Center (SBV-23449), Tenable (40887) and Exploit-DB (9594). Entries connected to this vulnerability are available at 50449 and 50445.

Productinfo

Type

Vendor

Name

CPE 2.3info

CPE 2.2info

Video

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

Name: EducatedScholar
Class: Denial of service / EducatedScholar
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: laurent gaffie
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 40887
Nessus Name: MS09-050: Microsoft Windows SMB2 _Smb2ValidateProviderCallback() Vulnerability (975497) (uncredentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 100283
OpenVAS Name: Microsoft Windows SMB2 _Smb2ValidateProviderCallback() Remote Code Execution Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/windows_smb2
Saint Name: Windows SMB2 buffer overflow

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ms09_050_smb2_negotiate_pidhigh.rb
MetaSploit Name: Microsoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereference
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: MS09-050
Suricata ID: 2012063
Suricata Class: 🔍
Suricata Message: 🔍

TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

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

Timelineinfo

09/07/2009 🔍
09/07/2009 +0 days 🔍
09/08/2009 +1 days 🔍
09/08/2009 +0 days 🔍
09/08/2009 +0 days 🔍
09/08/2009 +0 days 🔍
09/08/2009 +0 days 🔍
09/08/2009 +0 days 🔍
09/08/2009 +0 days 🔍
09/08/2009 +0 days 🔍
09/09/2009 +0 days 🔍
09/09/2009 +0 days 🔍
09/21/2009 +12 days 🔍
10/13/2009 +22 days 🔍
03/17/2021 +4173 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS09-050
Researcher: Laurent GaffiƩ
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-3103 (🔍)
OVAL: 🔍

X-Force: 53090 - Microsoft Windows srv2.sys code execution, High Risk
SecurityTracker: 1022848 - Windows Server Message Block NEGOTIATE PROTOCOL REQUEST Processing Flaw Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 23449 - [MS09-050] Microsoft Windows Server 2008 and Windows Vista SMB2 Remote Code Execution Vulnerability, Critical
SecurityFocus: 36299 - Microsoft Windows SMB2 '_Smb2ValidateProviderCallback()' Remote Code Execution Vulnerability
Secunia: 36623 - Microsoft Windows SMBv2 Multiple Vulnerabilities, Moderately Critical
OSVDB: 57799 - Microsoft Windows srv2.sys Kernel Driver SMB2 Malformed NEGOTIATE PROTOCOL REQUEST Remote DoS

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

Entryinfo

Created: 09/21/2009 04:13 PM
Updated: 03/17/2021 01:32 PM
Changes: (1) source_nessus_risk
Complete: 🔍

Comments

No comments yet. Languages: en.

Please log in to comment.

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!