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CVE-2012-1858

4.3 · MEDIUM

The toStaticHTML API (aka the SafeHTML component) in Microsoft Internet Explorer 8 and 9, Communicator 2007 R2, and Lync 2010 and 2010 Attendee does not properly handle event attributes and script,…

Published Jun 12, 2012microsoftCWE-200EPSS 22.02%

Overview

CVE-2012-1858 is a medium-severity vulnerability affecting microsoft lync. It was published on June 12, 2012 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The toStaticHTML API (aka the SafeHTML component) in Microsoft Internet Explorer 8 and 9, Communicator 2007 R2, and Lync 2010 and 2010 Attendee does not properly handle event attributes and script, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted HTML document, aka "HTML Sanitization Vulnerability."

Remediation

Check the references section for vendor advisories and patches from microsoft. Update lync to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refwww.us-cert.gov/cas/techalerts/TA12-164A.htmlRefwww.us-cert.gov/cas/techalerts/TA12-192A.htmlRefdocs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-037Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-050Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15530Refwww.us-cert.gov/cas/techalerts/TA12-164A.htmlRefwww.us-cert.gov/cas/techalerts/TA12-192A.htmlRefdocs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-037Refdocs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039

How CyberStrike helps

Frequently asked questions

What is CVE-2012-1858?

CVE-2012-1858 is a medium-severity vulnerability affecting microsoft lync. It was published on June 12, 2012 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2012-1858?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-1858?

Check the references section for vendor advisories and patches from microsoft. Update lync to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-1858?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-1858 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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