FKIE_CVE-2021-3524
Vulnerability from fkie_nvd - Published: 2021-05-17 17:15 - Updated: 2026-06-17 04:05
Severity
Summary
A flaw was found in the Red Hat Ceph Storage RadosGW (Ceph Object Gateway) in versions before 14.2.21. The vulnerability is related to the injection of HTTP headers via a CORS ExposeHeader tag. The newline character in the ExposeHeader tag in the CORS configuration file generates a header injection in the response when the CORS request is made. In addition, the prior bug fix for CVE-2020-10753 did not account for the use of \r as a header separator, thus a new flaw has been created.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| redhat | ceph | * | |
| redhat | ceph_storage | 4.0 | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| fedoraproject | fedora | 34 | |
| debian | debian_linux | 9.0 |
{
"affected": [
{
"affectedData": [
{
"product": "ceph",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "ceph 14.2.21"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
{
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"versionEndExcluding": "14.2.21",
"vulnerable": true
},
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}
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the Red Hat Ceph Storage RadosGW (Ceph Object Gateway) in versions before 14.2.21. The vulnerability is related to the injection of HTTP headers via a CORS ExposeHeader tag. The newline character in the ExposeHeader tag in the CORS configuration file generates a header injection in the response when the CORS request is made. In addition, the prior bug fix for CVE-2020-10753 did not account for the use of \\r as a header separator, thus a new flaw has been created."
},
{
"lang": "es",
"value": "Se encontr\u00f3 un fallo en Red Hat Ceph Storage RadosGW (Ceph Object Gateway) en versiones anteriores a la 14.2.21.\u0026#xa0;La vulnerabilidad est\u00e1 relacionada con la inyecci\u00f3n de encabezados HTTP por medio de una etiqueta CORS ExposeHeader.\u0026#xa0;El car\u00e1cter de nueva l\u00ednea en la etiqueta ExposeHeader en el archivo de configuraci\u00f3n CORS genera una inyecci\u00f3n de encabezado en la respuesta cuando se realiza la petici\u00f3n CORS.\u0026#xa0;Adem\u00e1s, la correcci\u00f3n de bug anterior para CVE-2020-10753 no ten\u00eda en cuenta el uso de \\r como separador de encabezado, por lo que un nuevo fallo ha sido creado"
}
],
"id": "CVE-2021-3524",
"lastModified": "2026-06-17T04:05:17.650",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
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}
],
"cvssMetricV31": [
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"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"version": "3.1"
},
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"impactScore": 3.6,
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},
"published": "2021-05-17T17:15:08.773",
"references": [
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],
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},
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},
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{
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"source": "af854a3a-2127-422b-91ae-364da2661108",
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}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-74"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
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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.
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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.