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CVE-2021-42340

DoS via memory leak with WebSocket connections

Published: Oct 14, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDUCWE-772
NVD MITRE
7.5CVSSHIGH
EPSS Score
11.0%
Top 4.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

Missing Release of Resource after Effective Lifetime in Apache Tomcat

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-772

Affected Products

org.apache.tomcat:tomcatMavenOSS Libraries
tomcatapache
On-premWeb App
Networking Infrastructure / load-balancer-proxy
hcinetappHardware Firmware
management services for element softwarenetappHardware Firmware
debian linuxdebian
On-premOS
Operating Systems / linux-distro
mavenpackage-ecosystemOSS Libraries
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
netappcommercialUSHardware Firmware
debianoss-projectGBOperating Systemsaka debian gnu/linux
and 40 more affected products View all →

Exploitability

Official Patch Available

References

https://nvd.nist.gov/vuln/detail/CVE-2021-42340
nvd.nist.gov
https://github.com/apache/tomcat/commit/31d62426645824bdfe076a0c0eafa904d90b4fb9
github.com
https://github.com/apache/tomcat/commit/80f1438ec45e77a07b96419808971838d259eb47
github.com
and 31 more references View all →

Timeline

Published
Oct 14, 2021
Last Updated
Nov 21, 2024

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