The VSIX Installer of Visual Studio allows for revival of expired code-signing certificates and modification of timestamps.
1932bca2b0e783b85e85684f614bf214f5590a29611bd69f1965b60a056e9d5e
Hi,
we have recently discovered a vulnerability in the VSIX Installer of Visual Studio. More specifically, the vulnerability existed in the validation of VSIX package signatures. This vulnerability allowed attackers
* to 'revive' expired code-signing certificates for VSIX package signatures and
* to maliciously modify timestamps when intercepting timestamp requests for VSIX package signatures.
For more details see here:
https://about.signpath.io/blog/2020/08/26/on-the-importance-of-trust-validation.html
Best regards,
SignPath