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ubuntucveUbuntu.comUB:CVE-2020-11996
HistoryJun 26, 2020 - 12:00 a.m.

CVE-2020-11996

2020-06-2600:00:00
ubuntu.com
ubuntu.com
18

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

55.7%

JSON

A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat
10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could
trigger high CPU usage for several seconds. If a sufficient number of such
requests were made on concurrent HTTP/2 connections, the server could
become unresponsive.

Notes

Author Note
mdeslaur HTTP/2 support introduced in 8.5
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchtomcat8< anyUNKNOWN
ubuntu18.04noarchtomcat9< anyUNKNOWN
ubuntu20.04noarchtomcat9< 9.0.31-1ubuntu0.1UNKNOWN

References

Related

cve 1
tomcat 3
kaspersky 1
nessus 20
cisa 1
ibm 6
openvas 13
f5 1
veracode 1
archlinux 1
nvd 1
redhat 5
suse 2
checkpoint_advisories 1
osv 8
debiancve 1
redhatcve 1
prion 1
cvelist 1
github 1
debian 2
photon 6
freebsd 1
atlassian 4
mageia 1
attackerkb 1
ubuntu 1
symantec 1
oracle 2
cve
cve
CVE-2020-11996
2020-06-26 17:15:10
tomcat
tomcat
Fixed in Apache Tomcat 8.5.56
2020-06-07 00:00:00
Fixed in Apache Tomcat 9.0.36
2020-06-07 00:00:00
Fixed in Apache Tomcat 10.0.0-M6
2020-06-07 00:00:00
kaspersky
kaspersky
KLA11823 CPU usage vulnerability in Apache Tomcat
2020-06-07 00:00:00
nessus
nessus
RHEL 6 / 7 / 8 : Red Hat JBoss Web Server 5.4 security (Moderate) (RHSA-2020:5170)
2020-11-23 00:00:00
Photon OS 3.0: Apache PHSA-2020-3.0-0114
2020-07-21 00:00:00
openSUSE Security Update : tomcat (openSUSE-2020-1063)
2020-07-27 00:00:00
cisa
cisa
Apache Releases Security Advisory for Apache Tomcat
2020-06-26 00:00:00
ibm
ibm
Security Bulletin: App Connect Professional is affected by Apache Tomcat vulnerabilities.
2020-10-07 13:41:00
Security Bulletin: Vulnerabilities in Apache Tomcat affects IBM Platform Symphony
2020-08-17 09:36:06
Security Bulletin: Multiple Apache Tomcat Vulnerabilities Affect IBM Control Center
2021-05-14 21:27:15
openvas
openvas
Apache Tomcat DoS Vulnerability (Jun 2020) - Windows
2020-06-29 00:00:00
openSUSE: Security Advisory for tomcat (openSUSE-SU-2020:1063-1)
2020-07-27 00:00:00
openSUSE: Security Advisory for tomcat (openSUSE-SU-2020:1051-1)
2020-07-24 00:00:00
f5
f5
K19240391 : Apache Tomcat vulnerability CVE-2020-11996
2020-07-07 00:00:00
veracode
veracode
Denial Of Service (DoS)
2020-06-26 07:34:58
archlinux
archlinux
[ASA-202006-16] tomcat8: denial of service
2020-06-28 00:00:00
nvd
nvd
CVE-2020-11996
2020-06-26 17:15:10
redhat
redhat
(RHSA-2020:5173) Moderate: Red Hat JBoss Web Server 5.4 security release
2020-11-23 12:01:21
(RHSA-2020:5170) Moderate: Red Hat JBoss Web Server 5.4 security release
2020-11-23 12:00:02
(RHSA-2021:0292) Important: Red Hat support for Spring Boot 2.3.6 security update
2021-02-02 10:21:06
suse
suse
Security update for tomcat (important)
2020-07-26 00:00:00
Security update for tomcat (important)
2020-07-23 00:00:00
checkpoint_advisories
checkpoint_advisories
Apache Tomcat Denial of Service (CVE-2020-11996)
2021-11-14 00:00:00
osv
osv
CVE-2020-11996
2020-06-26 17:15:10
Uncontrolled Resource Consumption in Apache Tomcat
2022-02-09 23:01:22
BIT-tomcat-2020-11996
2024-03-06 11:11:51
debiancve
debiancve
CVE-2020-11996
2020-06-26 17:15:10
redhatcve
redhatcve
CVE-2020-11996
2020-06-26 13:50:58
prion
prion
Code injection
2020-06-26 17:15:00
cvelist
cvelist
CVE-2020-11996
2020-06-26 16:27:20
github
github
Uncontrolled Resource Consumption in Apache Tomcat
2022-02-09 23:01:22
debian
debian
[SECURITY] [DLA 2279-1] tomcat8 security update
2020-07-12 21:11:35
[SECURITY] [DSA 4627-1] tomcat9 security update
2020-07-17 18:07:40
photon
photon
Important Photon OS Security Update - PHSA-2020-0114
2020-07-16 00:00:00
Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2020-1.0-0308
2020-07-15 00:00:00
Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2020-2.0-0263
2020-07-18 00:00:00
freebsd
freebsd
Apache Tomcat -- Multiple Vulnerabilities
2020-07-05 00:00:00
atlassian
atlassian
Upgrade Tomcat to version 9.0.37
2020-06-29 13:40:00
Upgrade Tomcat to version 9.0.37
2020-06-29 13:40:00
Upgrade the bundled version of Apache Tomcat to 8.5.57
2020-07-17 15:19:11
mageia
mageia
Updated tomcat packages fix security vulnerability
2020-08-18 21:47:25
attackerkb
attackerkb
CVE-2020-1938
2020-02-24 00:00:00
ubuntu
ubuntu
Tomcat vulnerabilities
2020-10-21 00:00:00
symantec
symantec
Apache Tomcat Vulnerabilities May 2020 - Mar 2021
2021-03-16 19:59:07
oracle
oracle
Oracle Critical Patch Update Advisory - January 2021
2021-01-19 00:00:00
Oracle Critical Patch Update Advisory - October 2020
2020-10-20 00:00:00

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

55.7%

JSON
Related for UB:CVE-2020-11996
cve1tomcat3kaspersky1nessus20cisa1ibm6openvas13f51veracode1archlinux1nvd1redhat5suse2checkpoint_advisories1osv8debiancve1redhatcve1prion1cvelist1github1debian2photon6freebsd1atlassian4mageia1attackerkb1ubuntu1symantec1oracle2