UBUNTU-CVE-2020-11993

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Source
https://ubuntu.com/security/CVE-2020-11993
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11993.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-11993
Upstream
Downstream
Related
Published
2020-08-07T16:15:00Z
Modified
2025-09-08T16:46:05Z
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
  • Ubuntu - medium
Summary
[none]
Details

Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.

References

Affected packages

Ubuntu:18.04:LTS / apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.14?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.29-1ubuntu4.14

Affected versions

2.*

2.4.27-2ubuntu3
2.4.29-1ubuntu1
2.4.29-1ubuntu2
2.4.29-1ubuntu3
2.4.29-1ubuntu4
2.4.29-1ubuntu4.1
2.4.29-1ubuntu4.2
2.4.29-1ubuntu4.3
2.4.29-1ubuntu4.4
2.4.29-1ubuntu4.5
2.4.29-1ubuntu4.6
2.4.29-1ubuntu4.7
2.4.29-1ubuntu4.8
2.4.29-1ubuntu4.10
2.4.29-1ubuntu4.11
2.4.29-1ubuntu4.12
2.4.29-1ubuntu4.13

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.29-1ubuntu4.14"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.29-1ubuntu4.14"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.29-1ubuntu4.14"
        },
        {
            "binary_name": "apache2-dev",
            "binary_version": "2.4.29-1ubuntu4.14"
        },
        {
            "binary_name": "apache2-ssl-dev",
            "binary_version": "2.4.29-1ubuntu4.14"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.29-1ubuntu4.14"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.29-1ubuntu4.14"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.29-1ubuntu4.14"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2@2.4.41-4ubuntu3.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.41-4ubuntu3.1

Affected versions

2.*

2.4.41-1ubuntu1
2.4.41-4ubuntu1
2.4.41-4ubuntu2
2.4.41-4ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "apache2",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "apache2-data",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "apache2-dev",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "apache2-ssl-dev",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "libapache2-mod-md",
            "binary_version": "2.4.41-4ubuntu3.1"
        },
        {
            "binary_name": "libapache2-mod-proxy-uwsgi",
            "binary_version": "2.4.41-4ubuntu3.1"
        }
    ],
    "availability": "No subscription required"
}