CVE-2021-3524 (GCVE-0-2021-3524)
Vulnerability from cvelistv5 – Published: 2021-05-17 00:00 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
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.
Severity
6.5 (Medium)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1951674 | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-list |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
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"id": "CVE-2021-3524",
"lastModified": "2024-11-21T06:21:45.760",
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T15:55:47+00:00",
"cve": "CVE-2021-3524",
"id": "CVE-2021-3524",
"initial_release_date": "2021-04-15T00:00:00+00:00",
"product_status:fixed": "1209",
"product_status:known_affected": "66",
"product_status:known_not_affected": "137",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "gateway: radosgw: CRLF injection",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3524.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T02:11:33Z",
"cve": "CVE-2021-3524",
"id": "CVE-2021-3524",
"initial_release_date": "2023-02-15T03:49:15Z",
"product_status:known_not_affected": "23",
"product_status:recommended": "1026",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-3524",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-3524.json",
"version": "24"
}
}
}
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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.
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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