CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.2 | $5k-$25k | 0.00 |
A vulnerability was found in Microsoft Windows (Operating System) (version unknown). It has been rated as critical. Affected by this issue is an unknown function of the component CSRSS. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, and integrity. CVE summarizes:
The Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly restrict the number of console objects for a process, which allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP AllocConsole Vulnerability."
The weakness was disclosed 07/12/2011 by j00ru with Hispasec as MS11-056 as confirmed bulletin (Technet). The advisory is available at microsoft.com. This vulnerability is handled as CVE-2011-1281 since 03/04/2011. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/19/2021).
As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 55572 (MS11-056: Vulnerabilities in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2507938)), 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 90719 (Microsoft Windows Client/Server Runtime Subsystem Elevation of Privilege Vulnerability (MS11-056)).
Upgrading eliminates this vulnerability. Applying the patch MS11-056 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.
The vulnerability is also documented in the databases at X-Force (67749) and Tenable (55572). The entries 57915, 57914, 57913 and 57912 are pretty similar.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.5VulDB Meta Temp Score: 6.2
VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Nessus ID: 55572
Nessus Name: MS11-056: Vulnerabilities in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2507938)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 902609
OpenVAS Name: Microsoft Windows CSRSS Privilege Escalation Vulnerabilities (2507938)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: MS11-056
Timeline
03/04/2011 🔍07/12/2011 🔍
07/12/2011 🔍
07/12/2011 🔍
07/12/2011 🔍
07/12/2011 🔍
07/12/2011 🔍
07/13/2011 🔍
07/13/2011 🔍
07/19/2011 🔍
03/19/2021 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: MS11-056
Researcher: j00ru
Organization: Hispasec
Status: Confirmed
CVE: CVE-2011-1281 (🔍)
OVAL: 🔍
X-Force: 67749
Vulnerability Center: 32237 - [MS11-056] Microsoft Windows Local Arbitrary Code Execution Vulnerability (CVE-2011-1281), High
SecurityFocus: 48588 - Microsoft Windows CSRSS 'AllocConsole()' Local Privilege Escalation Vulnerability
Secunia: 45174 - Microsoft Windows CSRSS Multiple Privilege Escalation Vulnerabilities, Less Critical
See also: 🔍
Entry
Created: 07/19/2011 02:00Updated: 03/19/2021 12:41
Changes: 07/19/2011 02:00 (79), 03/27/2017 09:17 (11), 03/19/2021 12:41 (3)
Complete: 🔍
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