CVE-2021-43980
- Source
- https://cve.org/CVERecord?id=CVE-2021-43980
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43980.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-43980
- Aliases
- Downstream
- Related
- Published
- 2022-09-28T14:15:09.880Z
- Modified
- 2026-04-12T00:39:44.097635Z
- Severity
-
- 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Git / github.com/apache/tomcat
Affected ranges
- Type
- GIT
- Repo
- https://github.com/apache/tomcat
- Events
-
IntroducedLast affectedIntroducedLast affectedIntroducedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affectedLast affected
- Database specific
{ "source": "CPE_FIELD", "cpe": [ "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone10:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone11:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone12:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone2:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone3:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone4:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone5:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone6:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone7:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone8:*:*:*:*:*:*", "cpe:2.3:a:apache:tomcat:10.1.0:milestone9:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "8.5.0" }, { "last_affected": "8.5.77" }, { "introduced": "9.0.0" }, { "last_affected": "9.0.60" }, { "introduced": "10.0.0" }, { "last_affected": "10.0.18" }, { "introduced": "0" }, { "last_affected": "10.1.0-milestone1" }, { "last_affected": "10.1.0-milestone10" }, { "last_affected": "10.1.0-milestone11" }, { "last_affected": "10.1.0-milestone12" }, { "last_affected": "10.1.0-milestone2" }, { "last_affected": "10.1.0-milestone3" }, { "last_affected": "10.1.0-milestone4" }, { "last_affected": "10.1.0-milestone5" }, { "last_affected": "10.1.0-milestone6" }, { "last_affected": "10.1.0-milestone7" }, { "last_affected": "10.1.0-milestone8" }, { "last_affected": "10.1.0-milestone9" }, { "last_affected": "10.0" }, { "last_affected": "11.0" } ] }