UBUNTU-CVE-2018-11763

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Source
https://ubuntu.com/security/CVE-2018-11763
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-11763.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-11763
Related
Published
2018-09-25T00:00:00Z
Modified
2018-09-25T00:00:00Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.

References

Affected packages

Ubuntu:18.04:LTS / apache2

Package

Name
apache2
Purl
pkg:deb/ubuntu/apache2?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.29-1ubuntu4.4

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-bin"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-data"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-dbg"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-dev"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-doc"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-ssl-dev"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-suexec-custom"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-suexec-pristine"
        },
        {
            "binary_version": "2.4.29-1ubuntu4.4",
            "binary_name": "apache2-utils"
        }
    ]
}