Vulnerability Details : CVE-2021-3524
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.
Vulnerability category: Input validation
Exploit prediction scoring system (EPSS) score for CVE-2021-3524
Probability of exploitation activity in the next 30 days: 0.51%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 76 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-3524
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-3524
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The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: secalert@redhat.com (Secondary)
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The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-3524
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https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html
[SECURITY] [DLA 3629-1] ceph security update
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https://lists.debian.org/debian-lts-announce/2021/08/msg00013.html
[SECURITY] [DLA 2735-1] ceph security updateMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FX5ZHI5L7FOHXOSEV3TYBAL66DMLJ7V5/
[SECURITY] Fedora 32 Update: ceph-14.2.21-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZRUNDH2TJRZRWL3DCH2PQ6KROWTPQ7AJ/
[SECURITY] Fedora 33 Update: ceph-15.2.12-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LPCJN2YDZCBMF4FOJXSTAADKFGEQEO7O/
[SECURITY] Fedora 34 Update: ceph-16.2.4-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=1951674
1951674 – (CVE-2021-3524) CVE-2021-3524 ceph object gateway: radosgw: CRLF injectionIssue Tracking;Patch;Vendor Advisory
Products affected by CVE-2021-3524
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*