CVE-2021-42340 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784@%3Ccommits.myfaces.apache.org%3E https://www.debian.org/security/2021/dsa-5009 https://security.netapp.com/advisory/ntap-20211104-0001/ https://www.oracle.com/security-alerts/cpujan2022.html https://kc.mcafee.com/corporate/index?page=content&id=SB10379 https://www.oracle.com/security-alerts/cpuapr2022.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5