Microsoft SharePoint/Lync/Infopath 2007/2010 HTML Sanitization HTML injection

CVSS Meta Temp Score
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6.0$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in Microsoft SharePoint, Lync and Infopath 2007/2010 (Groupware Software). Affected by this issue is an unknown code of the component HTML Sanitization. The manipulation with an unknown input leads to a html injection vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Cross-site scripting (XSS) vulnerability in Microsoft InfoPath 2007 SP2 and SP3 and 2010 SP1, Communicator 2007 R2, Lync 2010 and 2010 Attendee, SharePoint Server 2007 SP2 and SP3 and 2010 SP1, Groove Server 2010 SP1, Windows SharePoint Services 3.0 SP2, SharePoint Foundation 2010 SP1, and Office Web Apps 2010 SP1 allows remote attackers to inject arbitrary web script or HTML via a crafted string, aka "HTML Sanitization Vulnerability."

The weakness was released 10/09/2012 by Drew Hintz with Google Security Team as MS12-066 as confirmed bulletin (Website). The advisory is available at technet.microsoft.com. The public release was coordinated with the vendor. This vulnerability is handled as CVE-2012-2520 since 05/09/2012. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a private exploit is available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 62461 (MS12-066: Vulnerability in HTML Sanitization Component Could Allow Elevation of Privilege (2741517)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins.

Applying the patch MS12-066 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (78852), Zero-Day.cz (377), Tenable (62461), SecurityFocus (BID 55797†) and OSVDB (86059†). technet.microsoft.com is providing further details.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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CVSSv2info

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Exploitinginfo

Class: HTML injection
CWE: CWE-79 / CWE-74 / CWE-707
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ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Highly functional

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Nessus ID: 62461
Nessus Name: MS12-066: Vulnerability in HTML Sanitization Component Could Allow Elevation of Privilege (2741517)
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OpenVAS ID: 902688
OpenVAS Name: Microsoft Products HTML Sanitisation Component XSS Vulnerability (2741517)
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Zero-Day.cz: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: MS12-066

Timelineinfo

05/09/2012 🔍
10/09/2012 +153 days 🔍
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07/14/2024 +4295 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS12-066
Researcher: Drew Hintz
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-2520 (🔍)
OVAL: 🔍
IAVM: 🔍

X-Force: 78852
SecurityFocus: 55797 - Microsoft SharePoint And Microsoft Lync HTML Sanitization Cross Site Scripting Vulnerability
Secunia: 50855 - Microsoft Products HTML Sanitisation Component Cross-Site Scripting Vulnerability, Less Critical
OSVDB: 86059
SecurityTracker: 1027625 - Microsoft Groove Server HTML Sanitizer Flaw Permits Cross-Site Scripting Attacks
Vulnerability Center: 36428 - [MS12-066] Multiple Microsoft Product HTML Sanitization Vulnerabilities Allow XSS Attacks, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
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Entryinfo

Created: 10/10/2012 12:46 PM
Updated: 07/14/2024 09:17 PM
Changes: 10/10/2012 12:46 PM (89), 04/17/2017 07:49 PM (7), 04/14/2021 06:05 PM (3), 07/14/2024 09:17 PM (22)
Complete: 🔍
Committer:
Cache ID: 35:282:40

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