Asseco DS / Certum: Invalid dnsNames
Asseco Data Systems S.A. faced an issue with 37 SSL certificates that contained invalid dNSNames in their Subject Alternative Names (SAN), specifically including IP addresses. The problem was identified on January 30, 2019, following a report from Jonathan Rudenberg. Although the CA had ceased issuing such certificates since June 2017, they initially decided not to revoke the problematic certificates. However, after customer feedback and considering the potential impact, they opted to revoke all affected certificates by February 15, 2019. The CA has since committed to ensuring compliance with best practices to prevent similar issues in the future.
- Stopped issuing certificates with IP address in SAN dNSName.
- Received report of invalid dNSNames from Jonathan Rudenberg.
- All affected certificates were revoked.