CVE-2001-1476: High severity SSH ssh vulnerability

Published Jan 18, 2001

Updated

SSH before 2.0, with RC4 encryption and the "disallow NULL passwords" option enabled, makes it easier for remote attackers to guess portions of user passwords by replaying user sessions with certain modifications, which trigger different messages depending on whether the guess is correct or not.

Affected Software

8 affected components

SSH ssh=1.2.24

SSH ssh=1.2.25

SSH ssh=1.2.26

SSH ssh=1.2.27

SSH ssh=1.2.28

SSH ssh=1.2.29

SSH ssh=1.2.30

SSH ssh=1.2.31

Remediation

Patch Available

http://www.kb.cert.org/vuls/id/565052

Event History

Jan 18, 2001

CVE Published

05:00 AM

Apr 21, 2005

CVE Published

via MITRE·08:00 AM

Data Sourced

via MITRE·08:00 AM

Description

Frequently Asked Questions

What is the severity of CVE-2001-1476?

CVE-2001-1476 is considered to have a moderate severity rating due to the potential for password guessing.

How do I fix CVE-2001-1476?

To fix CVE-2001-1476, it is recommended to upgrade to a version of SSH that is more secure and does not have this vulnerability.

Which versions of SSH are affected by CVE-2001-1476?

CVE-2001-1476 affects SSH versions 1.2.24 through 1.2.31.

What happens if I leave CVE-2001-1476 unaddressed?

Leaving CVE-2001-1476 unaddressed may allow attackers to replay user sessions and guess passwords.

Is it safe to use SSH with RC4 encryption after CVE-2001-1476?

Using SSH with RC4 encryption is risky after CVE-2001-1476, as it may expose your passwords to vulnerabilities.