FKIE_CVE-2011-4362
Vulnerability from fkie_nvd - Published: 2011-12-24 19:55 - Updated: 2026-06-16 23:34
Severity
Summary
Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| lighttpd | lighttpd | * | |
| lighttpd | lighttpd | 1.5.0 | |
| debian | debian_linux | 5.0 | |
| debian | debian_linux | 6.0 | |
| debian | debian_linux | 7.0 |
{
"affected": [
{
"affectedData": [
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"vendor": "n/a",
"versions": [
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"version": "n/a"
}
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}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
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"cveTags": [],
"descriptions": [
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"lang": "en",
"value": "Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index."
},
{
"lang": "es",
"value": "Error de signo de entero en la funci\u00f3n base64_decode en la funcionalidad de autenticaci\u00f3n HTTP (http_auth.c) en lighttpd v1.4 anterior a v1.4.30 y v1.5 antes de la revisi\u00f3n SVN 2806 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (fallo de segmentaci\u00f3n) a trav\u00e9s de una entrada elaborada en base64 provando una lectura \"fuera de los l\u00edmites\" (out-of-bounds)con un \u00edndice negativo."
}
],
"id": "CVE-2011-4362",
"lastModified": "2026-06-16T23:34:50.717",
"metrics": {
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"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
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"source": "nvd@nist.gov",
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"published": "2011-12-24T19:55:05.240",
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"tags": [
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
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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.
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- 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
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