FKIE_CVE-2009-0642
Vulnerability from fkie_nvd - Published: 2009-02-20 06:47 - Updated: 2026-06-16 23:05
Severity
Summary
ext/openssl/ossl_ocsp.c in Ruby 1.8 and 1.9 does not properly check the return value from the OCSP_basic_verify function, which might allow remote attackers to successfully present an invalid X.509 certificate, possibly involving a revoked certificate.
References
{
"affected": [
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"vendor": "n/a",
"versions": [
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"source": "cve@mitre.org"
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"configurations": [
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},
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"lang": "es",
"value": "ext/openssl/ossl_ocsp.c en Ruby v1.8 y v1.9 no comprueba adecuadamente el valor de retorno de la funcion OCSP_basic_verify, lo cual permitiria a atacantes remotos tener exito en la presentacion de un certificado X.509 invalido, posiblemente utilizando un certificado revocado."
}
],
"id": "CVE-2009-0642",
"lastModified": "2026-06-16T23:05:28.767",
"metrics": {
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"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
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"exploitabilityScore": 8.6,
"impactScore": 6.4,
"obtainAllPrivilege": false,
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"source": "nvd@nist.gov",
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"published": "2009-02-20T06:47:48.297",
"references": [
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"source": "cve@mitre.org",
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"url": "http://secunia.com/advisories/33750"
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{
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"url": "http://secunia.com/advisories/35937"
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{
"source": "cve@mitre.org",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:193"
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{
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"url": "http://www.redhat.com/support/errata/RHSA-2009-1140.html"
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{
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"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/48761"
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"url": "http://www.securityfocus.com/bid/33769"
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"url": "http://www.securitytracker.com/id?1022505"
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{
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"url": "http://www.ubuntu.com/usn/USN-805-1"
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"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/48761"
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"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
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"description": [
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"value": "CWE-287"
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"source": "nvd@nist.gov",
"type": "Primary"
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]
}
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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.
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- 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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