They would already appear in a previous tree where the head was signed by us.

From: Alex Cohn <[email protected]>
Sent: Sunday, May 3, 2020 5:22 PM
To: Jeremy Rowley <[email protected]>
Cc: Mozilla <[email protected]>
Subject: Re: CT2 log signing key compromise

The timestamp on a SCT is fully controlled by the signer, so why should SCTs 
bearing a timestamp before May 2 still be considered trusted?

Alex

On Sun, May 3, 2020 at 6:19 PM Jeremy Rowley via dev-security-policy 
<[email protected]<mailto:[email protected]>>
 wrote:
Hey all,

The key used to sign SCTs for the CT2 log was compromised yesterday at 7pm 
through the Salt root bug. The remaining logs remain uncompromised and run on 
separate infrastructure.  We discovered the compromise today and are working to 
turn that log into read only mode so that no new SCTs are issued. We doubt the 
key was used to sign anything as you'd need to know the CT build to do so. 
However, as a precaution, we ask that you consider all SCTs invalid if the SCT 
was issued from CT2 after 7pm MST on May 2nd . Please let me know what 
questions you have.

Jeremy
_______________________________________________
dev-security-policy mailing list
[email protected]<mailto:[email protected]>
https://lists.mozilla.org/listinfo/dev-security-policy
_______________________________________________
dev-security-policy mailing list
[email protected]
https://lists.mozilla.org/listinfo/dev-security-policy

Reply via email to