Microsoft Windows msgsc.dll memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$5k-$25k0.00

A vulnerability was found in Microsoft Windows (Operating System) (version unknown). It has been declared as very critical. Affected by this vulnerability is an unknown function in the library msgsc.dll. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Windows Messenger ActiveX control in msgsc.dll in Microsoft Windows XP SP2 and SP3 allows remote attackers to execute arbitrary code via unspecified vectors that "corrupt the system state," aka "Microsoft Windows Messenger ActiveX Control Vulnerability."

The weakness was published 04/13/2011 as MS11-027 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. This vulnerability is known as CVE-2011-1243. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/02/2021).

The vulnerability scanner Nessus provides a plugin with the ID 53384 (MS11-027: Cumulative Security Update of ActiveX Kill Bits (2508272)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90694 (Microsoft Windows Cumulative Security Update of ActiveX Kill Bits (MS11-027)).

Applying the patch MS11-027 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. A possible mitigation has been published even before and not after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11039.

The vulnerability is also documented in the databases at X-Force (66448) and Tenable (53384). Similar entries are available at 53511, 55850 and 56962.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 53384
Nessus Name: MS11-027: Cumulative Security Update of ActiveX Kill Bits (2508272)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 900281
OpenVAS Name: Microsoft IE Developer Tools WMITools and Windows Messenger ActiveX Control Vulnerability (2508272)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS11-027
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

03/04/2011 🔍
04/12/2011 +39 days 🔍
04/12/2011 +0 days 🔍
04/13/2011 +1 days 🔍
04/13/2011 +0 days 🔍
04/13/2011 +0 days 🔍
04/13/2011 +0 days 🔍
03/23/2015 +1439 days 🔍
11/02/2021 +2416 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS11-027
Status: Confirmed

CVE: CVE-2011-1243 (🔍)
OVAL: 🔍

X-Force: 66448
Vulnerability Center: 31078 - [MS11-027] Microsoft Windows XP Remote Arbitrary Code Execution Vulnerability via a Crafted Web Page, Critical
SecurityFocus: 47197
Secunia: 44159
OSVDB: 71788 - Microsoft Windows Messenger ActiveX Unspecified Remote Code Execution

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/02/2021 10:44
Changes: 03/23/2015 16:50 (67), 03/21/2017 11:02 (12), 11/02/2021 10:39 (3), 11/02/2021 10:44 (1)
Complete: 🔍

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