This is not possible because:
....
Note that the suspicious scheme ("ms-msdt:/") is not present in the
document. It's present in the first stage payload that will be downloaded
by Office.
....
and
....
The document contains an external reference pointing to a malicious URL:
....
If the malicious URL is known, it can be detected by assp using URIBL.
Keep in mind that those malicious URL's can be generated and changed very
quickly!
>Hopefully clamav will eventually catch it,
I don't think this is possible for every case. Also traditional AV
scanners need to know all used malicious URL's. Only a behavior analysis
of the document will be able to detect the malicious download and
playload.
Solutions for CVE-2022-30190 are provided by Microsoft:
https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/
Thomas
Von: "K Post" <[email protected]>
An: "ASSP development mailing list" <[email protected]>
Datum: 31.05.2022 20:14
Betreff: [Assp-test] blocking new MS doc vunerability (URI attack
vector)
Hello Thomas,
Any way for ASSP to block this kind of thing?
https://isc.sans.edu/forums/diary/New+Microsoft+Office+Attack+Vector+via+msmsdt+Protocol+Scheme+CVE202230190/28694
Hopefully clamav will eventually catch it, but be nice great to be able
strip documents off using AFC if they contain the URI protocol, just like
we do for VBA code, etc.
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