CVE-2023-0547

Summary

CVE-2023-0547 is a cybersecurity vulnerability affecting Thunderbird email clients from versions 68 to 102.9.1. This issue allows the acceptance of revoked certificates during the sending of S/Mime encrypted emails. The On-line Certificate Status Protocol (OCSP) revocation check was not implemented, leaving the system unable to verify the status of recipient certificates. Consequently, this vulnerability poses a risk for man-in-the-middle attacks and potential data breaches. Users running Thunderbird versions below 102.10 are advised to update their software to mitigate this risk.

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