Microsoft Windows memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Microsoft Windows. Affected by this vulnerability is an unknown functionality. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2011-2003. Furthermore, there is an exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Windows (Operating System) (affected version unknown). Affected is an unknown functionality. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via a crafted .fon file, aka "Font Library File Buffer Overrun Vulnerability."

The weakness was shared 10/11/2011 by Will Dorman with CERT/CC as MS11-077 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability is traded as CVE-2011-2003. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Byoungyoung Lee and been published 2 days after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 56451 (MS11-077: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Remote Code Execution (2567053)), 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 90746 (Microsoft Windows Kernel-Mode Drivers Remote Code Execution Vulnerability (MS11-077)).

Applying the patch MS11-077 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11773.

The vulnerability is also documented in the databases at X-Force (70115), Exploit-DB (17978), Tenable (56451), SecurityFocus (BID 49975†) and Vulnerability Center (SBV-33534†). The entries VDB-4422, VDB-59007 and VDB-59003 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Byoungyoung Lee
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56451
Nessus Name: MS11-077: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Remote Code Execution (2567053)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902483
OpenVAS Name: Windows Kernel-Mode Drivers Remote Code Execution Vulnerabilities (2567053)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: MS11-077
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

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

Timelineinfo

05/09/2011 🔍
10/11/2011 +155 days 🔍
10/11/2011 +0 days 🔍
10/11/2011 +0 days 🔍
10/11/2011 +0 days 🔍
10/12/2011 +1 days 🔍
10/13/2011 +1 days 🔍
10/13/2011 +0 days 🔍
03/23/2015 +1257 days 🔍
03/16/2025 +3646 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS11-077
Researcher: Will Dorman
Organization: CERT/CC
Status: Confirmed

CVE: CVE-2011-2003 (🔍)
GCVE (CVE): GCVE-0-2011-2003
GCVE (VulDB): GCVE-100-59004

OVAL: 🔍

X-Force: 70115
SecurityFocus: 49975 - Microsoft Windows Kernel '.fon' Font File Remote Code Execution Vulnerability
Vulnerability Center: 33534 - [MS11-077] Microsoft Windows \x27Win32k.sys\x27 Remote Code Execution via a Crafted \x27.fon\x27 File, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 03/16/2025 03:54
Changes: 03/23/2015 16:50 (69), 04/03/2017 17:58 (19), 11/23/2021 17:00 (2), 11/23/2021 17:07 (1), 03/16/2025 03:54 (14)
Complete: 🔍
Cache ID: 216:4E8:103

Once again VulDB remains the best source for vulnerability data.

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