Allow software to run or install even if the signature is invalid is not disabled.

Part of DTBI350 - Software with invalid signatures

Associated with IA controls: DCMC-1

SV-25562r1_rule Allow software to run or install even if the signature is invalid is not disabled.

Vulnerability discussion

Microsoft ActiveX controls and file downloads often have digital signatures attached that vouch for both the file's integrity and the identity of the signer (creator) of the software. An invalid signature might indicate that someone has tampered with the file.

Check content

Fix text

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Advanced Page -> "Allow software to run or install even if the signature is invalid" will be set to “Disabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Internet Explorer\Download Criteria: Set the value RunInvalidSignatures to REG_DWORD = 0.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.