CVE-2021-43980
Apache Tomcat: Information disclosure
LOW 3.7
At a glance
- Source
- NVD
- EPSS
- EPSS 2.36 % · percentile 84 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-362 — Race Condition
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | LOW 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N | CISA-ADP |
| CVSS 3.1 | LOW 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | LOW 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Advisories
- GHSA-jx7c-7mj5-9438 — Apache Tomcat Race Condition vulnerability
European references
- ENISA EUVD · EUVD-2022-6865
- GCVE · GCVE-0-2021-43980
CERT-FR advisories
- CERTFR-2024-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*≥ 8.5.0 ≤ 8.5.77cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*≥ 9.0.0 ≤ 9.0.60cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*≥ 10.0.0 ≤ 10.0.18cpe: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:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache Tomcat | affected 10.1.0-M1 to 10.1.0-M12 ; affected 10.0.0-M1 to 10.0.18 ; affected 9.0.0-M1 to 9.0.60 ; affected 8.5.0 to 8.5.77 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |