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CVE-2021-42340

DoS via memory leak with WebSocket connections

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

11.8%Up 11.2 points since Oct 15, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

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.

Record
CVE-2021-42340
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-772
Updated
2026-11-02
CVE List No score

DoS via memory leak with WebSocket connections

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.

Record
CVE-2021-42340
Weakness
CWE-772
Updated
2026-11-02
EUVDEUVD-2021-2266 No score

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.

Record
EUVD-2021-2266
Updated
2026-11-03
GitHub AdvisoriesGHSA-wph7-x527-w3h5 7.5

Missing Release of Resource after Effective Lifetime in Apache Tomcat

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.

Record
GHSA-wph7-x527-w3h5
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-772
Updated
2026-11-02
OSV 7.5

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.

Record
CVE-2021-42340
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-42340 7.5

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.

Record
DEBIAN-CVE-2021-42340
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 12 moreShow less
OSVGHSA-wph7-x527-w3h5 7.5

Missing Release of Resource after Effective Lifetime in Apache Tomcat

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.

Record
GHSA-wph7-x527-w3h5
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-772
Updated
2026-11-02
OSVOESA-2021-1413 7.5

tomcat security update

The Apache Tomcat software is developed in an open and participatory environment and released under the Apache License version 2. The Apache Tomcat project is intended to be a collaboration of the best-of-breed developers from around the world. We invite you to participate in this open development project

Security Fix(es):

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.(CVE-2021-42340)

Record
OESA-2021-1413
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHBA-2022:8077 7.5

Red Hat Bug Fix Advisory: pki-servlet-engine bug fix and enhancement update

Record
RHBA-2022:8077
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2021:4861 7.5

Red Hat Security Advisory: Red Hat JBoss Web Server 5.6.0 Security release

Record
RHSA-2021:4861
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-42340 7.5

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.

Record
UBUNTU-CVE-2021-42340
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBIT-tomcat-2021-42340 No score

DoS via memory leak with WebSocket connections

The fix for bug 63362 present in Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 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.

Record
BIT-tomcat-2021-42340
Updated
2026-11-02
OSVCLSA-2025-1748282295 No score

Fix of 34 CVEs

  • SECURITY UPDATE: Misc vulnerability fixes
    • CVE-2019-12418, CVE-2019-17563, CVE-2020-1935, CVE-2020-11996, CVE-2020-13934, CVE-2020-13935, CVE-2020-13943, CVE-2020-17527, CVE-2021-24122, CVE-2021-30639, CVE-2021-30640, CVE-2021-33037, CVE-2021-42340, CVE-2021-43980, CVE-2022-25762, CVE-2022-34305, CVE-2022-45143, CVE-2023-24998, CVE-2023-28709, CVE-2023-34981, CVE-2023-42794, CVE-2024-21733
  • Update to 8.5.100
    • debian/rules, debian/libtomcat8-java.poms, debian/maven.rules, debian/tomcat8-common.links, debian/patches/0018-fix-manager-webapp.patch, debian/patches/0019-add-distribution-to-error-page.patch, debian/patches/0021-dont-test-unsupported-ciphers.patch, debian/patches/0101-skipping-tests-incompatible-with-firewall.patch: updated
    • debian/patches/0002-do-not-load-AJP13-connector-by-default.patch, debian/patches/0026-easymock4-compatibility.patch: removed as they were applied in upstream
    • CVE-2019-0221.patch, CVE-2019-10072-1.patch, CVE-2019-10072-2.patch, CVE-2022-42252.patch, CVE-2020-1938.patch, CVE-2021-25122.patch, CVE-2021-41079.patch, CVE-2022-29885.patch, CVE-2020-9484.patch, CVE-2021-25329-pre1.patch, CVE-2021-25329.patch, CVE-2022-23181.patch, CVE-2023-44487.patch, CVE-2023-46589-pre1.patch, CVE-2023-46589-pre2.patch, CVE-2023-46589-pre3.patch, CVE-2023-46589-pre4.patch, CVE-2023-46589.patch: removed because these CVEs were fixed in upstream
  • Internal tests
    • debian/test_certs/*: updated from upstream branch 9.0.x, as the 8.0.x certs were expired
Record
CLSA-2025-1748282295
Updated
2026-11-02
OSVCLSA-2025-1764720465 No score

TuxCare security update for 5 packages (18 CVEs)

TuxCare rebuilt 5 packages to address 18 CVEs. Fixed in 9.0.50-tuxcare.2.

Record
CLSA-2025-1764720465
Updated
2026-11-02
OSVCLSA-2026-1773188120 No score

TuxCare security update for 5 packages (23 CVEs)

TuxCare rebuilt 5 packages to address 23 CVEs. Fixed in 9.0.46-tuxcare.1.

Record
CLSA-2026-1773188120
Updated
2026-11-02
OSVCLSA-2026-1792667085 No score

TuxCare security update for 7 packages (24 CVEs)

TuxCare rebuilt 7 packages to address 24 CVEs. Fixed in 8.5.46-tuxcare.1.

Record
CLSA-2026-1792667085
Updated
2026-11-02
OSVCLSA-2026-1792687381 No score

TuxCare security update for 5 packages (4 CVEs)

TuxCare rebuilt 5 packages to address 4 CVEs. Fixed in 7.0.109-tuxcare.5.

Record
CLSA-2026-1792687381
Updated
2026-11-02
OSVMGASA-2021-0485 No score

Updated tomcat packages fix security vulnerability

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. (CVE-2021-30640)

Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding. (CVE-2021-33037)

Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service. (CVE-2021-41079)

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. (CVE-2021-42340)

Record
MGASA-2021-0485
Updated
2026-11-02

Affected products

Show 7 moreShow less

Affected packages

Affected packages
PackageAffectedFixed
org.apache.tomcat:tomcat
Maven
10.1.0-M1 to 10.1.0-M5
10.1.0-M6
org.apache.tomcat:tomcat
Maven
10.0.0-M1 up to 10.0.12
10.0.12
org.apache.tomcat:tomcat
Maven
9.0.40 up to 9.0.54
9.0.54
org.apache.tomcat:tomcat
Maven
8.5.60 up to 8.5.72
8.5.72
tomcat
Bitnami
8.5.60 up to 8.5.72, 9.0.40 up to 9.0.54, 10.0.1 up to 10.0.12
8.5.729.0.5410.0.12
libtomcat8-embed-java
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
libtomcat8-java
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
tomcat8
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
tomcat8-admin
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
tomcat8-common
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
Show 68 moreShow less
Affected packages
PackageAffectedFixed
tomcat8-docs
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
tomcat8-examples
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
tomcat8-user
TuxCare:Ubuntu:18.04
From an advisory covering 34 CVEs
before 8.5.100-1ubuntu1~18.04.1+tuxcare.els1
8.5.100-1ubuntu1~18.04.1+tuxcare.els1
org.apache.tomcat.embed:tomcat-embed-core
TuxCare:Maven
From an advisory covering 18 CVEs
9.0.50 up to 9.0.50-tuxcare.2, plus listed versions
9.0.50-tuxcare.1
9.0.50-tuxcare.2
org.apache.tomcat:tomcat
TuxCare:Maven
From an advisory covering 18 CVEs
9.0.50 up to 9.0.50-tuxcare.2, plus listed versions
9.0.50-tuxcare.1
9.0.50-tuxcare.2
org.apache.tomcat:tomcat-catalina
TuxCare:Maven
From an advisory covering 18 CVEs
9.0.50 up to 9.0.50-tuxcare.2, plus listed versions
9.0.50-tuxcare.1
9.0.50-tuxcare.2
org.apache.tomcat:tomcat-coyote
TuxCare:Maven
From an advisory covering 18 CVEs
9.0.50 up to 9.0.50-tuxcare.2, plus listed versions
9.0.50-tuxcare.1
9.0.50-tuxcare.2
org.apache.tomcat:tomcat-util
TuxCare:Maven
From an advisory covering 18 CVEs
9.0.50 up to 9.0.50-tuxcare.2, plus listed versions
9.0.50-tuxcare.1
9.0.50-tuxcare.2
org.apache.tomcat.embed:tomcat-embed-core
TuxCare:Maven
From an advisory covering 23 CVEs
9.0.46 up to 9.0.46-tuxcare.1
9.0.46-tuxcare.1
org.apache.tomcat:tomcat
TuxCare:Maven
From an advisory covering 23 CVEs
9.0.46 up to 9.0.46-tuxcare.1
9.0.46-tuxcare.1
org.apache.tomcat:tomcat-catalina
TuxCare:Maven
From an advisory covering 23 CVEs
9.0.46 up to 9.0.46-tuxcare.1
9.0.46-tuxcare.1
org.apache.tomcat:tomcat-coyote
TuxCare:Maven
From an advisory covering 23 CVEs
9.0.46 up to 9.0.46-tuxcare.1
9.0.46-tuxcare.1
org.apache.tomcat:tomcat-util
TuxCare:Maven
From an advisory covering 23 CVEs
9.0.46 up to 9.0.46-tuxcare.1
9.0.46-tuxcare.1
org.apache.tomcat.embed:tomcat-embed-core
TuxCare:Maven
From an advisory covering 24 CVEs
8.5.46 up to 8.5.46-tuxcare.1
8.5.46-tuxcare.1
org.apache.tomcat.embed:tomcat-embed-websocket
TuxCare:Maven
From an advisory covering 24 CVEs
8.5.46 up to 8.5.46-tuxcare.1
8.5.46-tuxcare.1
org.apache.tomcat:tomcat
TuxCare:Maven
From an advisory covering 24 CVEs
8.5.46 up to 8.5.46-tuxcare.1
8.5.46-tuxcare.1
org.apache.tomcat:tomcat-catalina
TuxCare:Maven
From an advisory covering 24 CVEs
8.5.46 up to 8.5.46-tuxcare.1
8.5.46-tuxcare.1
org.apache.tomcat:tomcat-coyote
TuxCare:Maven
From an advisory covering 24 CVEs
8.5.46 up to 8.5.46-tuxcare.1
8.5.46-tuxcare.1
org.apache.tomcat:tomcat-tribes
TuxCare:Maven
From an advisory covering 24 CVEs
8.5.46 up to 8.5.46-tuxcare.1
8.5.46-tuxcare.1
org.apache.tomcat:tomcat-websocket
TuxCare:Maven
From an advisory covering 24 CVEs
8.5.46 up to 8.5.46-tuxcare.1
8.5.46-tuxcare.1
org.apache.tomcat.embed:tomcat-embed-core
TuxCare:Maven
From an advisory covering 4 CVEs
7.0.109 up to 7.0.109-tuxcare.5, plus listed versions
7.0.109-tuxcare.17.0.109-tuxcare.27.0.109-tuxcare.37.0.109-tuxcare.4
7.0.109-tuxcare.5
org.apache.tomcat:tomcat
TuxCare:Maven
From an advisory covering 4 CVEs
7.0.109 up to 7.0.109-tuxcare.5, plus listed versions
7.0.109-tuxcare.17.0.109-tuxcare.27.0.109-tuxcare.37.0.109-tuxcare.4
7.0.109-tuxcare.5
org.apache.tomcat:tomcat-catalina
TuxCare:Maven
From an advisory covering 4 CVEs
7.0.109 up to 7.0.109-tuxcare.5, plus listed versions
7.0.109-tuxcare.17.0.109-tuxcare.27.0.109-tuxcare.37.0.109-tuxcare.4
7.0.109-tuxcare.5
org.apache.tomcat:tomcat-coyote
TuxCare:Maven
From an advisory covering 4 CVEs
7.0.109 up to 7.0.109-tuxcare.5, plus listed versions
7.0.109-tuxcare.17.0.109-tuxcare.27.0.109-tuxcare.37.0.109-tuxcare.4
7.0.109-tuxcare.5
org.apache.tomcat:tomcat-util
TuxCare:Maven
From an advisory covering 4 CVEs
7.0.109 up to 7.0.109-tuxcare.5, plus listed versions
7.0.109-tuxcare.17.0.109-tuxcare.27.0.109-tuxcare.37.0.109-tuxcare.4
7.0.109-tuxcare.5
tomcat9
Debian:12
before 9.0.54-1
9.0.54-1
tomcat9
Debian:13
before 9.0.54-1
9.0.54-1
tomcat9
Debian:14
before 9.0.54-1
9.0.54-1
tomcat9
Debian:11
before 9.0.43-2~deb11u3, plus listed versions
9.0.43-19.0.43-2~deb11u19.0.43-2~deb11u2
9.0.43-2~deb11u3
org.apache.tomcat:tomcat
Maven
10.1.0-M1 up to 10.1.0-M6, plus listed versions
10.1.0-M210.1.0-M410.1.0-M5
10.1.0-M6
org.apache.tomcat:tomcat
Maven
10.0.0-M1 up to 10.0.12, plus listed versions
10.0.010.0.0-M1010.0.0-M310.0.0-M410.0.0-M5
Show 12 moreShow less
10.0.0-M610.0.0-M710.0.0-M810.0.0-M910.0.1010.0.1110.0.210.0.410.0.510.0.610.0.710.0.8
10.0.12
org.apache.tomcat:tomcat
Maven
9.0.40 up to 9.0.54, plus listed versions
9.0.419.0.439.0.449.0.459.0.46
Show 4 moreShow less
9.0.489.0.509.0.529.0.53
9.0.54
org.apache.tomcat:tomcat
Maven
8.5.60 up to 8.5.72, plus listed versions
8.5.618.5.638.5.648.5.658.5.66
Show 4 moreShow less
8.5.688.5.698.5.708.5.71
8.5.72
tomcat
Mageia:8
From an advisory covering 4 CVEs
before 9.0.54-1.mga8
9.0.54-1.mga8
tomcat
openEuler:20.03-LTS-SP1
before 9.0.10-22.oe1
9.0.10-22.oe1
tomcat
openEuler:20.03-LTS-SP2
before 9.0.10-22.oe1
9.0.10-22.oe1
pki-servlet-4.0-api
Red Hat:enterprise_linux:9::appstream
before 1:9.0.50-1.el9
1:9.0.50-1.el9
pki-servlet-engine
Red Hat:enterprise_linux:9::appstream
before 1:9.0.50-1.el9
1:9.0.50-1.el9
jws5-tomcat
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-admin-webapps
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-docs-webapp
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-el-3.0-api
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-java-jdk11
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-java-jdk8
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-javadoc
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-jsp-2.3-api
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-lib
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-native
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:1.2.30-3.redhat_3.el7jws
0:1.2.30-3.redhat_3.el7jws
jws5-tomcat-native-debuginfo
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:1.2.30-3.redhat_3.el7jws
0:1.2.30-3.redhat_3.el7jws
jws5-tomcat-selinux
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-servlet-4.0-api
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat-vault
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:1.1.8-4.Final_redhat_00004.1.el7jws
0:1.1.8-4.Final_redhat_00004.1.el7jws
jws5-tomcat-vault-javadoc
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:1.1.8-4.Final_redhat_00004.1.el7jws
0:1.1.8-4.Final_redhat_00004.1.el7jws
jws5-tomcat-webapps
Red Hat:jboss_enterprise_web_server:5.6::el7
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el7jws
0:9.0.50-3.redhat_00004.1.el7jws
jws5-tomcat
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-admin-webapps
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-docs-webapp
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-el-3.0-api
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-javadoc
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-jsp-2.3-api
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-lib
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-native
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:1.2.30-3.redhat_3.el8jws
0:1.2.30-3.redhat_3.el8jws
jws5-tomcat-native-debuginfo
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:1.2.30-3.redhat_3.el8jws
0:1.2.30-3.redhat_3.el8jws
jws5-tomcat-selinux
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-servlet-4.0-api
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws
jws5-tomcat-vault
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:1.1.8-4.Final_redhat_00004.1.el8jws
0:1.1.8-4.Final_redhat_00004.1.el8jws
jws5-tomcat-vault-javadoc
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:1.1.8-4.Final_redhat_00004.1.el8jws
0:1.1.8-4.Final_redhat_00004.1.el8jws
jws5-tomcat-webapps
Red Hat:jboss_enterprise_web_server:5.6::el8
From an advisory covering 6 CVEs
before 0:9.0.50-3.redhat_00004.1.el8jws
0:9.0.50-3.redhat_00004.1.el8jws

History

History
RecordedChangedSources
affected, facts
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-42340 is a high vulnerability (CVSS 7.5) in Apache Tomcat, published October 14, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 11.8%, the 96th percentile. Fixed in org.apache.tomcat:tomcat 10.1.0-M6.

References

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