Improper input validation in Debian Linux
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 class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.016 (74.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 32, 33, 34
- Redhat Ceph
- Redhat Ceph_storage — versions 4.0
- N/a Ceph — versions ceph 14.2.21
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list)
Frequently asked questions
- What is CVE-2021-3524?
- CVE-2021-3524 is a medium-severity vulnerability in Debian Linux, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2021-05-17.
- How severe is CVE-2021-3524?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-3524 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.