CVE-2021-43980

 

Published at: - 28-09-2022 04:15

Last modified: - 26-10-2022 05:15

Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

 

Verification logic

 

Reference

• https://lists.apache.org/thread/3jjqbsp6j88b198x5rmg99b1qr8ht3g3
• [oss-security] 20220928 CVE-2021-43980: Apache Tomcat: Information disclosure-Mailing List, Third Party Advisory
• [debian-lts-announce] 20221026 [SECURITY] [DLA 3160-1] tomcat9 security update-

 

Keywords

NVD

 

CVE-2021-43980

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures