Let’s Encrypt bug in issuance of certificates

The certification authority, Let’s Encrypt, has reported a bug in its CAA (Certification Authority Authorization) code, specifically on Boulder, the CA (Certification Authority) software responsible for verifying CAA records while validating a subscriber’s control of a domain name.

The incident took place on 29th February and was fixed two hours later. Then, the company noticed it to its affected subscribers and decided revoke around 3 million of active TLS/SSL certificates, nearly a 2.6% of the total, as of 4th March.

A downloadable list has been supplied with serial affected numbers.


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