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Memory Leak in Mirantis Container Runtime (MCR) running in FIPS mode causes a Denial of Service (DoS)

Release Date

2022/01/10

Overview

When running with FIPS mode enabled, Mirantis Container Runtime leaks memory during TLS Handshakes which could be abused to cause a denial of service.

Affected Products

Mirantis Container Runtime (MCR) version 20.10.8

Vulnerability Information

CVE Identifier

CVE-2021-23218

CVSSv3.1

5.3 (Medium) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWEs

CWE-401

Mitigations

FIPS mode is not the default mode of operation

Work arounds

Disable FIPS mode

Acknowledgements

Found by Mirantis PSIRT

Disclosure Timeline

2022/01/10: public advisory released

2021/12/21: 20.10.8 released

2021/12/09: Mirantis PSIRT reported vulnerability to MCR team