VDB
DEBIAN-CVE-2021-42340
DEBIAN-CVE-2021-42340
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | tomcat9 | 0, 0, 0 |
| Debian:11 | tomcat9 | 0, 9.0.43-1, 9.0.43-2 |
| Debian:13 | tomcat9 | 0, 0, 0 |
| Debian:12 | tomcat9 | 0, 0, 0 |
Timeline
- Oct 14, 2021 CVE Published
- Apr 28, 2026 CVE Updated