CVE-2021-42340
DoS via memory leak with WebSocket connections
- State
- Published
- Severity
- Not scored
- Published
- Oct 14, 2021
- Updated
- Aug 4, 2024
- Reserved
- Oct 13, 2021
Description
The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.
Scores
The record has no CVSS score.
Weaknesses
- CWE-772 Missing Release of Resource after Effective Lifetime
Affected Products
| Product | Versions |
|---|---|
Apache TomcatApache Software Foundation |
|
References
- https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E
- [myfaces-commits] 20211021 [myfaces-tobago] branch tobago-5.x updated: build: workaround for CVE-2021-42340mailing-list
- DSA-5009vendor-advisory
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://security.netapp.com/advisory/ntap-20211104-0001/
- https://kc.mcafee.com/corporate/index?page=content&id=SB10379
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- GLSA-202208-34vendor-advisory
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