CVE-2019-19521 (GCVE-0-2019-19521)
Vulnerability from cvelistv5 – Published: 2019-12-04 23:33 – Updated: 2024-08-05 02:16
VLAI
EPSS
VEX
Summary
libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c).
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2019/… | x_refsource_MISC |
| https://www.openbsd.org/errata66.html | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2019/12/04/6 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2019/12/04/5 | mailing-listx_refsource_MLIST |
| https://seclists.org/bugtraq/2019/Dec/8 | mailing-listx_refsource_BUGTRAQ |
| http://packetstormsecurity.com/files/155572/Qualy… | x_refsource_MISC |
| http://seclists.org/fulldisclosure/2019/Dec/14 | mailing-listx_refsource_FULLDISC |
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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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