=========================================================================Ubuntu Security Notice USN-5487-1
June 21, 2022

apache2 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Apache HTTP Server.

Software Description:
- apache2: Apache HTTP server

Details:

It was discovered that Apache HTTP Server mod_proxy_ajp incorrectly handled
certain crafted request. A remote attacker could possibly use this issue to
perform an HTTP Request Smuggling attack. (CVE-2022-26377)

It was discovered that Apache HTTP Server incorrectly handled certain
request. An attacker could possibly use this issue to cause a denial
of service. (CVE-2022-28614)

It was discovered that Apache HTTP Server incorrectly handled certain request.
An attacker could possibly use this issue to cause a crash or expose
sensitive information. (CVE-2022-28615)

It was discovered that Apache HTTP Server incorrectly handled certain request.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2022-29404)

It was discovered that Apache HTTP Server incorrectly handled certain
request. An attacker could possibly use this issue to cause a crash.
(CVE-2022-30522)

It was discovered that Apache HTTP Server incorrectly handled certain request.
An attacker could possibly use this issue to execute arbitrary code or cause
a crash. (CVE-2022-30556)

It was discovered that Apache HTTP Server incorrectly handled certain request.
An attacker could possibly use this issue to bypass IP based authentication.
(CVE-2022-31813)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
  apache2                         2.4.52-1ubuntu4.1
  apache2-bin                     2.4.52-1ubuntu4.1

Ubuntu 21.10:
  apache2                         2.4.48-3.1ubuntu3.5
  apache2-bin                     2.4.48-3.1ubuntu3.5

Ubuntu 20.04 LTS:
  apache2                         2.4.41-4ubuntu3.12
  apache2-bin                     2.4.41-4ubuntu3.12

Ubuntu 18.04 LTS:
  apache2                         2.4.29-1ubuntu4.24
  apache2-bin                     2.4.29-1ubuntu4.24

Ubuntu 16.04 ESM:
  apache2                         2.4.18-2ubuntu3.17+esm6
  apache2-bin                     2.4.18-2ubuntu3.17+esm6

Ubuntu 14.04 ESM:
  apache2                         2.4.7-1ubuntu4.22+esm5
  apache2-bin                     2.4.7-1ubuntu4.22+esm5

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5487-1
  CVE-2022-26377, CVE-2022-28614, CVE-2022-28615, CVE-2022-29404,
  CVE-2022-30522, CVE-2022-30556, CVE-2022-31813

Package Information:
  https://launchpad.net/ubuntu/+source/apache2/2.4.52-1ubuntu4.1
  https://launchpad.net/ubuntu/+source/apache2/2.4.48-3.1ubuntu3.5
  https://launchpad.net/ubuntu/+source/apache2/2.4.41-4ubuntu3.12
  https://launchpad.net/ubuntu/+source/apache2/2.4.29-1ubuntu4.24