CVE-2018-15473 (GCVE-0-2018-15473)
Vulnerability from cvelistv5 – Published: 2018-08-17 00:00 – Updated: 2025-12-17 21:22
VLAI
EPSS
VEX
Summary
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 21:22 UTC
CWE
- n/a
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
18 references
Date Public
2018-08-17 00:00
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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-12-18T01:10:03+00:00",
"cve": "CVE-2018-15473",
"id": "CVE-2018-15473",
"initial_release_date": "2018-08-16T00:00:00+00:00",
"product_status:fixed": "640",
"product_status:known_affected": "1",
"product_status:known_not_affected": "9",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "openssh: User enumeration via malformed packets in authentication requests",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-15473.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-01T01:52:50Z",
"cve": "CVE-2018-15473",
"id": "CVE-2018-15473",
"initial_release_date": "2023-02-15T04:24:57Z",
"product_status:known_affected": "2",
"product_status:known_not_affected": "62",
"product_status:recommended": "174",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2018-15473",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-15473.json",
"version": "18"
},
"vulnrichment": {
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"cveMetadata": "{\"cveId\": \"CVE-2018-15473\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-17T21:22:47.283Z\", \"dateReserved\": \"2018-08-17T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2018-08-17T00:00:00.000Z\", \"assignerShortName\": \"mitre\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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