Microsoft Windows code injection

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been rated as critical. Affected is an unknown function. The manipulation leads to code injection. This vulnerability is referenced as CVE-2009-1920. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows (Operating System) (version unknown). This issue affects an unknown function. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The JScript scripting engine 5.1, 5.6, 5.7, and 5.8 in JScript.dll in Microsoft Windows, as used in Internet Explorer, does not properly load decoded scripts into memory before execution, which allows remote attackers to execute arbitrary code via a crafted web site that triggers memory corruption, aka "JScript Remote Code Execution Vulnerability."

The weakness was published 09/08/2009 by ling wushi with team509 as MS09-045 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. The identification of this vulnerability is CVE-2009-1920 since 06/04/2009. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 40888 (MS09-045: Vulnerability in JScript Scripting Engine Could Allow Remote Code Execution (971961)), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90522 (Microsoft JScript Scripting Engine Remote Code Execution Vulnerability (MS09-045)).

Upgrading eliminates this vulnerability. Applying the patch MS09-045 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 8436.

The vulnerability is also documented in the databases at X-Force (52771), Tenable (40888), SecurityFocus (BID 36224†), OSVDB (57804†) and Secunia (SA36551†). Similar entries are available at VDB-4029, VDB-4028 and VDB-4026. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 40888
Nessus Name: MS09-045: Vulnerability in JScript Scripting Engine Could Allow Remote Code Execution (971961)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 900929
OpenVAS Name: Microsoft JScript Scripting Engine Remote Code Execution Vulnerability (971961)
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: MS09-045
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

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

Timelineinfo

06/04/2009 🔍
09/08/2009 +96 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 🔍
09/21/2009 +12 days 🔍
04/07/2025 +5677 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS09-045
Researcher: ling wushi
Organization: team509
Status: Confirmed

CVE: CVE-2009-1920 (🔍)
GCVE (CVE): GCVE-0-2009-1920
GCVE (VulDB): GCVE-100-4025

OVAL: 🔍
IAVM: 🔍

X-Force: 52771
SecurityFocus: 36224 - Microsoft JScript Scripting Engine Keyword Arguments Remote Code Execution Vulnerability
Secunia: 36551 - Microsoft JScript Scripting Engine Memory Corruption Vulnerability, Highly Critical
OSVDB: 57804 - Microsoft JScript Scripting Engine Memory Corruption Arbitrary Code Execution
Vulnerability Center: 23442 - [MS09-045] Microsoft JScript Memory Corruption Remote Arbitrary Code Execution Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 09/21/2009 15:38
Updated: 04/07/2025 14:49
Changes: 09/21/2009 15:38 (89), 02/14/2017 16:27 (10), 03/17/2021 13:02 (3), 04/07/2025 14:49 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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