Denial of service in Red Hat Certificate System (RHCS)

Published: 2024-02-12
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-4213
Exploitation vector Network
Public exploit N/A
Vulnerable software
Red Hat Certificate System
Client/Desktop applications / Other client software

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Memory leak

EUVDB-ID: #VU86348

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-4213

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No


The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak. A remote attacker can force the application to leak memory and perform denial of service attack.


Install updates from vendor's website.

Vulnerable software versions

Red Hat Certificate System: before 10.4

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.