FKIE_CVE-2020-9490
Vulnerability from fkie_nvd - Published: 2020-08-07 16:15 - Updated: 2026-06-17 03:28
Severity
Summary
Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.
References
Impacted products
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"descriptions": [
{
"lang": "en",
"value": "Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the \u0027Cache-Digest\u0027 header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via \"H2Push off\" will mitigate this vulnerability for unpatched servers."
},
{
"lang": "es",
"value": "Apache HTTP Server versiones 2.4.20 hasta 2.4.43.. Un valor especialmente dise\u00f1ado para el encabezado \"Cache-Digest\" en una petici\u00f3n HTTP/2 resultar\u00eda en un bloqueo cuando el servidor realmente intenta un PUSH HTTP/2 un recurso mas tarde. Una configuraci\u00f3n de la funcionalidad HTTP/2 por medio de \"H2Push off\" mitigar\u00e1 esta vulnerabilidad para los servidores no parcheados"
}
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"id": "CVE-2020-9490",
"lastModified": "2026-06-17T03:28:03.130",
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"published": "2020-08-07T16:15:12.043",
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{
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},
{
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},
{
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},
{
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},
{
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},
{
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"tags": [
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],
"url": "http://packetstormsecurity.com/files/160392/Apache-2.4.43-mod_http2-Memory-Corruption.html"
},
{
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],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
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"value": "CWE-444"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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