Attacker Value
High
3
CVE-2018-15919
3
CVE ID
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CVE-2018-15919
(Last updated October 06, 2023) ▾
MITRE ATT&CK
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Credential Access
Techniques
Validation
Validated
Initial Access
Techniques
Validation
Validated
Persistence
Techniques
Validation
Validated
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Collection
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Command and Control
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Credential Access
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Defense Evasion
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Discovery
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Execution
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Impact
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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.’
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1
Ratings
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Attacker ValueHigh
-
ExploitabilityHigh
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Data provided by the National Vulnerability Database (NVD)
Base Score:
5.3 Medium
Impact Score:
1.4
Exploitability Score:
3.9
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
Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown
Vendors
- netapp,
- openbsd
Products
- cloud backup -,
- cn1610 firmware -,
- data ontap edge -,
- ontap select deploy -,
- openssh,
- steelstore -
Exploited in the Wild
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Miscellaneous
Additional Info
Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Rapid7
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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