HTTP response splitting in Ceph - CVE-2021-3524
Published: August 21, 2025
Vulnerability identifier: #VU114318
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-3524
CWE-ID: CWE-113
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Red Hat Inc.
Affected software:
Ceph
Ceph
Detailed vulnerability description
The vulnerability allows a remote attacker to perform HTTP splitting attacks.
The vulnerability exists due to software does not correctly process CRLF character sequences. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.
Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.
How to mitigate CVE-2021-3524
Install updates from vendor's website.