FKIE_CVE-2009-3941
Vulnerability from fkie_nvd - Published: 2009-11-16 19:30 - Updated: 2026-06-16 23:12
Severity
Summary
Martin Lambers mpop before 1.0.19, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the (1) subject's Common Name or (2) Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
References
Impacted products
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"value": "Martin Lambers mpop before 1.0.19, when OpenSSL is used, does not properly handle a \u0027\\0\u0027 character in a domain name in the (1) subject\u0027s Common Name or (2) Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408."
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"value": "Martin Lambers mpop versiones anteriores a v1.4.19, cuando usa OpenSSL, no maneja adecuadamente un car\u00e1cter \u0027\\0\u0027 en un nombre de dominio (1) en el campo nombre com\u00fan del sujeto o (2) en el campo nombre alternativo del sujeto de un certificado X.509, permitiendo que atacantes de hombre en medio (man-in-the-middle) suplantar a servidores SSL de su elecci\u00f3n mediante un certificado modificado emitido por una Autoridad de Certificaci\u00f3n leg\u00edtima, estando relacionado con el CVE-2009-2408."
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"lastModified": "2026-06-16T23:12:40.243",
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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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