The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.
History

Wed, 21 May 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published: 2022-09-28T00:00:00.000Z

Updated: 2025-05-21T15:00:10.097Z

Reserved: 2021-11-17T00:00:00.000Z

Link: CVE-2021-43980

cve-icon Vulnrichment

Updated: 2024-08-04T04:10:16.914Z

cve-icon NVD

Status : Modified

Published: 2022-09-28T14:15:09.880

Modified: 2025-05-21T15:15:55.223

Link: CVE-2021-43980

cve-icon Redhat

Severity : Low

Publid Date: 2022-09-28T00:00:00Z

Links: CVE-2021-43980 - Bugzilla