User Enumeration Vulnerability in OpenSSH by The OpenSSH Project
CVE-2018-15919
5.3MEDIUM
Summary
A security flaw in OpenSSH through version 7.8 allows remote attackers to determine the existence of users on a target system when GSS2 authentication is employed. This vulnerability can be exploited to conduct username enumeration attacks, making it feasible for malicious actors to ascertain valid usernames on the system. Despite the potential impact, the OpenSSH developers have opted not to classify this behavior as a vulnerability.
References
CVSS V3.1
Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged
Timeline
Vulnerability published
Vulnerability Reserved