CVE-2021-43980
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
Percentile
58.5%
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.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| apache | tomcat | * | cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone10:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone11:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone12:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone2:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone3:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone4:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone5:*:*:*:*:*:* |
| apache | tomcat | 10.1.0 | cpe:2.3:a:apache:tomcat:10.1.0:milestone6:*:*:*:*:*:* |
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
Percentile
58.5%