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CVE-1999-1085 - Two fisted Decrement

Description

SSH 1.2.25 1.2.23 and other versions when used in in CBC (Cipher Block Chaining) or CFB (Cipher Feedback 64 bits) modes allows remote attackers to insert arbitrary data into an existing stream between an SSH client and server by using a known plaintext attack and computing a valid CRC-32 checksum for the packet aka the \SSH insertion attack.\

Reference

http://www.kb.cert.org/vuls/id/13877 http://www.iss.net/security_center/static/1126.php http://marc.info/?l=bugtraq&m=90221103125884&w=2 http://marc.info/?l=bugtraq&m=90221104525878&w=2