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TLP:WHITE

Fraudulent SSL Certificates

Original release date: March 23, 2011 | Last revised: October 23, 2012

US-CERT is aware of public reports of the existence of fraudulent SSL certificates. These fraudulent SSL certificates could be used by an attacker to masquerade as a trusted website. Multiple web browser vendors have provided updates to recognize and block these fraudulent SSL certificates.

Mozilla has updated Firefox 4.0, 3.6, and 3.5. Additional information can be found in the Mozilla Security Blog.

Microsoft has released updates for various platforms in Microsoft Knowledge Base Article 2524375. Additional information can be found in Microsoft Security Advisory 2524375.

US-CERT encourages users and administrators to apply any necessary updates to help mitigate the risks. US-CERT will provide additional information as it becomes available.

This product is provided subject to this Notification and this Privacy & Use policy.

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