CVEvulnerability

CVE-1999-1085

5.0 MEDIUM Published 1998-06-12 Modified 2026-06-16 Official page ↗
Status
Modified
Published
1998-06-12
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N

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."

Affected configurations

• ssh secure shell 1.2.23 • ssh secure shell 1.2.25

References