Problema with MIME types attachments: filename.xlsx.p7m

[Michele Conz1]

Hello all.

We should attach to KB articles attachment of xlsx files digitally signed (p7m), just like "example_file.xlsx.p7m".

Both extension are permitted in system property "glide.attachment.extensions" and we want to mantain "glide.security.file.mime_type.validation" set to true.

"File type not permitted or mime type does not match the file content" is the only answer we get from the system...

How can we do?

[Miguel Donayre · Accepted solution]

Hello,

 You can workaround most cases of this issue by (1) mapping the file extension to its expected mime type by updating or creating the system property: 'glide.security.mime_type.extension_mapping', and if that isn't sufficient proceeding to (2) forcing the system to accept different file types for that extension by updating or creating the system property: 'glide.security.mime_type.aliasset'

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0750111

[shloke04]

Hi,

Please refer to below HI Article which talks on how to resolve the issue you are getting:

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0718011

Hope this helps. Please mark the answer as correct/helpful based on impact.

Regards,
Shloke