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CVE-2021-3524 (GCVE-0-2021-3524)

Vulnerability from cvelistv5 – Published: 2021-05-17 00:00 – Updated: 2024-08-03 17:01
VLAI
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a ceph Affected: ceph 14.2.21
Show details on NVD website
To clipboard 

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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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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.