Attacker Value
High
(1 user assessed)
Exploitability
High
(1 user assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
2

CVE-2018-15919

Disclosure Date: August 28, 2018
Exploited in the Wild
Add MITRE ATT&CK tactics and techniques that apply to this CVE.
Credential Access
Techniques
Validation
Validated
Initial Access
Techniques
Validation
Validated
Persistence
Techniques
Validation
Validated

Description

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states ‘We understand that the OpenSSH developers do not want to treat such a username enumeration (or “oracle”) as a vulnerability.’

CVSS V3 Severity and Metrics
Base Score:
5.3 Medium
Impact Score:
1.4
Exploitability Score:
3.9
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
Low
Integrity (I):
None
Availability (A):
None

General Information

Exploited in the Wild

Reported by:

Additional Info

Technical Analysis