A Surfeit of SSH Cipher Suites

  title={A Surfeit of SSH Cipher Suites},
  author={Martin R. Albrecht and Jean Paul Degabriele and Torben Brandt Hansen and Kenneth G. Paterson},
  booktitle={ACM Conference on Computer and Communications Security},
This work presents a systematic analysis of symmetric encryption modes for SSH that are in use on the Internet, providing deployment statistics, new attacks, and security proofs for widely used modes. We report deployment statistics based on two Internet-wide scans of SSH servers conducted in late 2015 and early 2016. Dropbear and OpenSSH implementations dominate in our scans. From our first scan, we found 130,980 OpenSSH servers that are still vulnerable to the CBC-mode-specific attack of… CONTINUE READING
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