CVE-2021-42340CWE-772

DoS via memory leak with WebSocket connections

published October 14, 2021

CVSS

—

EPSS

12%

Percentile

96.1

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS: Not scored
CVSS v4.0: Not supplied
EPSS: 0.11796 · 96.1th percentile
Weakness: CWE-772 · Missing Release of Resource after Effective Lifetime
Published: 2021-10-14T19:55Z

EPSS history

Timeline

14 OCT 19:55Z
DoS via memory leak with WebSocket connections
cvelistv5