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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
15

7.5 High

CVSS3

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

5 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.002 Low

EPSS

Percentile

52.9%

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

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ibm 6
cisa 1
openvas 13
suse 2
veracode 1
archlinux 1
redhat 5
prion 1
github 1
osv 6
checkpoint_advisories 1
redhatcve 1
debiancve 1
debian 2
photon 6
freebsd 1
atlassian 4
attackerkb 1
mageia 1
ubuntu 1
symantec 1
oracle 2
kaspersky
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KLA11823 CPU usage vulnerability in Apache Tomcat
2020-06-07 00:00:00
cve
cve
CVE-2020-11996
2020-06-26 17:15:00
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
f5
f5
K19240391 : Apache Tomcat vulnerability CVE-2020-11996
2020-07-07 00:00:00
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RHEL 6 / 8 : Red Hat JBoss Web Server 5.4 security release (Moderate) (RHSA-2020:5170)
2020-11-23 00:00:00
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2020-07-21 00:00:00
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2020-06-29 00:00:00
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[SECURITY] [DLA 2279-1] tomcat8 security update
2020-07-12 21:11:35
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Important Photon OS Security Update - PHSA-2020-0114
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Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2020-1.0-0308
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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
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7.5 High

CVSS3

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

5 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.002 Low

EPSS

Percentile

52.9%

JSON
Related for UB:CVE-2020-11996
kaspersky1cve1tomcat3f51nessus19ibm6cisa1openvas13suse2veracode1archlinux1redhat5prion1github1osv6checkpoint_advisories1redhatcve1debiancve1debian2photon6freebsd1atlassian4attackerkb1mageia1ubuntu1symantec1oracle2