CVE-1999-1085

Summary

CVE-1999-1085 is a vulnerability affecting SSH versions 1.2.25 and 1.2.23, among others, when used in CBC (Cipher Block Chaining) or CFB (Cipher Feedback 64 bits) modes. An attacker can exploit this issue by inserting arbitrary data into an ongoing SSH stream, thanks to a known plaintext attack. The attacker computes a valid CRC-32 checksum for the packet to bypass security measures and manipulate data exchanged between the client and server, posing a significant risk to confidentiality and integrity.

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