Vulnerabilities > CVE-2001-1473 - Cryptographic Issues vulnerability in SSH
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
The SSH-1 protocol allows remote servers to conduct man-in-the-middle attacks and replay a client challenge response to a target server by creating a Session ID that matches the Session ID of the target, but which uses a public key pair that is weaker than the target's public key, which allows the attacker to compute the corresponding private key and use the target's Session ID with the compromised key pair to masquerade as the target.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 8 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Signature Spoofing by Key Recreation An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Nessus
| NASL family | General |
| NASL id | SSH1_PROTO_ENABLED.NASL |
| description | The remote SSH daemon supports connections made using the version 1.33 and/or 1.5 of the SSH protocol. These protocols are not completely cryptographically safe so they should not be used. |
| last seen | 2020-04-30 |
| modified | 2002-03-06 |
| plugin id | 10882 |
| published | 2002-03-06 |
| reporter | This script is Copyright (C) 2002-2020 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/10882 |
| title | SSH Protocol Version 1 Session Key Retrieval |