Mend.io Vulnerability Database

What is a CVE vulnerability ID? icon What is a WS vulnerability ID? icon What is an MSC vulnerability ID? icon
New vulnerability? Tell us about it!
icon

We found results for “”

CVE-2021-43980

Good to know:

icon
icon

Date: September 28, 2022

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.

Language: Java

Severity Score

Related Resources (8)

https://lists.apache.org/thread/3jjqbsp6j88b198x5rmg99b1qr8ht3g3
http://www.openwall.com/lists/oss-security/2022/09/28/1
https://access.redhat.com/security/cve/CVE-2021-43980
https://lists.debian.org/debian-lts-announce/2022/10/msg00029.html
https://nvd.nist.gov/vuln/detail/CVE-2021-43980
https://security-tracker.debian.org/tracker/CVE-2021-43980
https://www.debian.org/security/2022/dsa-5265
https://www.mend.io/vulnerability-database/CVE-2021-43980

Severity Score

Weakness Type (CWE)

Race Conditions

CWE-362

Top Fix

icon

Upgrade Version

Upgrade to version org.apache.tomcat:tomcat-coyote:8.5.78,9.0.62,10.0.20,10.1.0-M14

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

Do you need more information?

Contact Us