FKIE_CVE-2009-2730
Vulnerability from fkie_nvd - Published: 2009-08-12 10:30 - Updated: 2026-06-16 23:10
Severity
Summary
libgnutls in GnuTLS before 2.8.2 does not properly handle a '\0' character in a domain name in the subject's (1) Common Name (CN) or (2) Subject Alternative Name (SAN) 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.
References
Impacted products
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "libgnutls in GnuTLS before 2.8.2 does not properly handle a \u0027\\0\u0027 character in a domain name in the subject\u0027s (1) Common Name (CN) or (2) Subject Alternative Name (SAN) 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."
},
{
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"value": "libgnutls en GnuTLS versiones anteriores a v2.8.2 no gestiona adecuadamente un car\u00e1cter \u0027\\0\u0027 en el nombre de dominio en los campos de identificaci\u00f3n (1) Common Name (CN) o (2) Subject Alternative Name (SAN) de un certificado X.509, permitiendo que atacantes \"hombre en el medio\" (man-in-the-middle) suplanten servidores SSL de su elecci\u00f3n mediante un certificado modificado que ha sido proporcionado por una Autoridad de Certificaci\u00f3n leg\u00edtima."
}
],
"id": "CVE-2009-2730",
"lastModified": "2026-06-16T23:10:07.240",
"metrics": {
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"acInsufInfo": false,
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"accessVector": "NETWORK",
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"baseScore": 7.5,
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"exploitabilityScore": 10.0,
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"source": "nvd@nist.gov",
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}
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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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