Follow the instructions below to check if your client has automatically switched to the new host keys. Many SSH clients will switch to one of the new host keys automatically, but you will need to verify this for each connected SSH client. No action is required for your Bitbucket Pipelines builds or user-generated SSH keys. We highly recommend that you immediately switch to using the newer ECDSA or Ed25519 host keys for each of your SSH clients that connect to, including other applications such as IDEs and CI/CD build systems. On J1700 UTC we will also remove our DSA host key this key will stop working entirely. The corresponding RSA key fingerprint is: 3072 SHA256:46OSHA1Rmj8E8ERTC6xkNcmGOw9oFxYr0WF6zWW8l1E (RSA) On J1700 UTC we will replace our current RSA host key with the following: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQDQeJzhupRu0u0cdegZIa8e86EG2qOCsIsD1Xw0xSeiPDlCr7kq97NLmMbpKTX6Esc30NuoqEEHCuc7yWtwp8dI76EEEB1VqY9QJq6vk+aySyboD5QF61I/1WeTwu+deCbgKMGbUijeXhtfbxSxm6JwGrXrhBdofTsbKRUsrN1WoNgUa8uqN1V圆WAJw1JHPhglEGGHea6QICwJOAr/6mrui/oB7pkaWKHj3z7d1IC4KWLtY47elvjbaTlkN04Kc/5LFEirorGYVbt15kAUlqGM65pk6ZBxtaO3+30LVlORZkxOh+LKL/BvbZ/iRNhItLqNyieoQj/uh/7Iv4uyH/cV/0b4WDSd3DptigWq84lJubb9t/DnZlrJazxyDCulTmKdOR7vs9gMTo+uoIrPSb8ScTtvw65+odKAlBj59dhnVp9zd7QUojOpXlL62Aw56U4oO+FALuevvMjiWeavKhJqlR7i5n9srYcrNV7ttmDw7kf/97P5zauIhxcjX+xHv4M= The corresponding fingerprints are: 256 SHA256:FC73VB6C4OQLSCrjEayhMp9UMxS97caD/Yyi2bhW/J0 (ECDSA)Ģ56 SHA256:ybgmFkzwOSotHTHLJgHO0QN8L0圎rw6vd0VhFA9m3SM (ED25519) RSA host key rotation Ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIazEu89wgQZ4bqs3d63QSMzYVa0MuJ2e2gKTKqu+UUO On 2300 UTC we added two new host keys using the ECDSA and Ed25519 algorithms: ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBPIQmuzMBuKdWeF4+a2sjSSpBK0iqitSQ+5BM9KhpexuGt20JpTVM7u5BDZngncgrqDMbWdxMWWOGtZ9UgbqgZE= Your security is always our top priority, and we believe that acting proactively is the best approach.īala Sathiamurthy, CISO/Head of Security WHAT'S CHANGING New host keys added We understand that rotating host keys can be disruptive. I want to assure you that a threat actor cannot use the old host keys to directly access your data on Bitbucket Cloud, or to access your private SSH keys. If we did not change the host keys it might have been possible in the future for a threat actor to potentially use the old host keys in combination with an already compromised network to trick clients into connecting to and trusting a malicious host. Though we believe the risk of compromise is low, by rotating the host keys proactively we are mitigating future risk should the old host keys be decrypted. Please review this blog and complete the applicable steps outlined below as soon as possible. In response, Bitbucket issued two new SSH host keys today and will be replacing the current host keys on June 20, 2023. The SSH protocol uses host keys to establish the identity of a trusted server for every SSH connection, like when a git pull establishes a SSH connection to Bitbucket Cloud. We recently learned that encrypted copies of Bitbucket’s SSH host keys were included in a data breach of a third-party credential management vendor.
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