A vulnerability, which was classified as critical, has been found in SSH up to 1.2.31 (SSH Server Software). This issue affects an unknown part of the component RC4 Encryption. The manipulation with an unknown input leads to a missing encryption vulnerability. Using CWE to declare the problem leads to CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

SSH before 2.0, when using RC4 and password authentication, allows remote attackers to replay messages until a new server key (VK) is generated.

The weakness was published 01/18/2001 as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. The identification of this vulnerability is CVE-2001-1475 since 04/21/2005. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/29/2018). The attack technique deployed by this issue is T1600 according to MITRE ATT&CK. Due to its background and reception, this vulnerability has a historic impact.

Upgrading to version 2.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (6490). Similar entry is available at 16356.

Productinfo

Type

• SSH Server Software

Name

• SSH

Version

• 1.2.24
• 1.2.25
• 1.2.26
• 1.2.27
• 1.2.28
• 1.2.29
• 1.2.30
• 1.2.31

License

• open-source

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

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