UBUNTU-CVE-2020-11996

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Source

https://ubuntu.com/security/CVE-2020-11996

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11996.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-11996

Related

Published

2020-06-26T17:15:00Z

Modified

2025-06-10T08:37:47Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

[none]

Details

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.

References

Affected packages

Ubuntu:Pro:18.04:LTS / tomcat8

Package

Name: tomcat8
Purl: pkg:deb/ubuntu/tomcat8@8.5.39-1ubuntu1~18.04.3+esm5?arch=source&distro=esm-apps/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

8.*

8.5.21-1ubuntu1

8.5.29-1

8.5.30-1

8.5.30-1ubuntu1

8.5.30-1ubuntu1.2

8.5.30-1ubuntu1.3

8.5.30-1ubuntu1.4

8.5.39-1ubuntu1~18.04.1

8.5.39-1ubuntu1~18.04.2

8.5.39-1ubuntu1~18.04.3

8.5.39-1ubuntu1~18.04.3+esm1

8.5.39-1ubuntu1~18.04.3+esm2

8.5.39-1ubuntu1~18.04.3+esm3

8.5.39-1ubuntu1~18.04.3+esm4

8.5.39-1ubuntu1~18.04.3+esm5

Ecosystem specific

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / tomcat9

Package

Name: tomcat9
Purl: pkg:deb/ubuntu/tomcat9@9.0.16-3ubuntu0.18.04.2+esm7?arch=source&distro=esm-apps/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

9.*

9.0.16-3~18.04.1

9.0.16-3ubuntu0.18.04.1

9.0.16-3ubuntu0.18.04.2

9.0.16-3ubuntu0.18.04.2+esm1

9.0.16-3ubuntu0.18.04.2+esm2

9.0.16-3ubuntu0.18.04.2+esm3

9.0.16-3ubuntu0.18.04.2+esm4

9.0.16-3ubuntu0.18.04.2+esm5

9.0.16-3ubuntu0.18.04.2+esm6

9.0.16-3ubuntu0.18.04.2+esm7

Ecosystem specific

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / tomcat9

Package

Name: tomcat9
Purl: pkg:deb/ubuntu/tomcat9@9.0.31-1ubuntu0.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

9.0.31-1ubuntu0.1

Affected versions

9.*

9.0.24-1

9.0.27-1

9.0.31-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libtomcat9-embed-java",
            "binary_version": "9.0.31-1ubuntu0.1"
        },
        {
            "binary_name": "libtomcat9-java",
            "binary_version": "9.0.31-1ubuntu0.1"
        },
        {
            "binary_name": "tomcat9",
            "binary_version": "9.0.31-1ubuntu0.1"
        },
        {
            "binary_name": "tomcat9-admin",
            "binary_version": "9.0.31-1ubuntu0.1"
        },
        {
            "binary_name": "tomcat9-common",
            "binary_version": "9.0.31-1ubuntu0.1"
        },
        {
            "binary_name": "tomcat9-docs",
            "binary_version": "9.0.31-1ubuntu0.1"
        },
        {
            "binary_name": "tomcat9-examples",
            "binary_version": "9.0.31-1ubuntu0.1"
        },
        {
            "binary_name": "tomcat9-user",
            "binary_version": "9.0.31-1ubuntu0.1"
        }
    ],
    "availability": "No subscription required",
    "ubuntu_priority": "medium"
}