User Enumeration Vulnerability in OpenSSH by The OpenSSH Project
CVE-2018-15919

5.3MEDIUM

Key Information:

Vendor

OpenBSD
Status
Openssh
Vendor
CVE Published:
28 August 2018

What is CVE-2018-15919?

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

https://security.netapp.com/advisory/ntap-20181221-0001/
x_refsource_CONFIRM
http://www.securityfocus.com/bid/105163
vdb-entryx_refsource_BID
http://seclists.org/oss-sec/2018/q3/180
x_refsource_MISC

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

.