Fix the vulnerable template "Flags" attribute in order to work with Schannel (PassTheCert) #69
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Hi @ly4k!
We've noticed that, when exploiting ESC4, the
CT_FLAG_IS_CAflag (present in the default SubCA template) generates a certificate that is not compatible with PassTheCert, which uses Schannel for LDAP authentication.Setting the Flags attribute to 0 fixes the issue and makes the certificate work both with PKINIT and Schannel. You can specifically disable the
CT_FLAG_IS_CAattribute only if you prefer, but it seems that the other flags are not required either.More info about Schannel: https://offsec.almond.consulting/authenticating-with-certificates-when-pkinit-is-not-supported.html
Thanks!