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Ubuntu Security Notice USN-5212-1

Ubuntu Security Notice USN-5212-1
Posted Jan 6, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5212-1 - It was discovered that the Apache HTTP Server incorrectly handled certain forward proxy requests. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly perform a Server Side Request Forgery attack. It was discovered that the Apache HTTP Server Lua module incorrectly handled memory in the multipart parser. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, web, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-44224, CVE-2021-44790
SHA-256 | 720562c2963cbcdb5ebd4105b577dec64e35d188b21a7bd642506a9284fda762

Ubuntu Security Notice USN-5212-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5212-1
January 06, 2022

apache2 vulnerabilities
==========================================================================

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

- Ubuntu 21.10
- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Apache HTTP Server.

Software Description:
- apache2: Apache HTTP server

Details:

It was discovered that the Apache HTTP Server incorrectly handled certain
forward proxy requests. A remote attacker could use this issue to cause
the server to crash, resulting in a denial of service, or possibly perform
a Server Side Request Forgery attack. (CVE-2021-44224)

It was discovered that the Apache HTTP Server Lua module incorrectly
handled memory in the multipart parser. A remote attacker could use this
issue to cause the server to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2021-44790)

Update instructions:

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

Ubuntu 21.10:
apache2 2.4.48-3.1ubuntu3.2
apache2-bin 2.4.48-3.1ubuntu3.2

Ubuntu 21.04:
apache2 2.4.46-4ubuntu1.5
apache2-bin 2.4.46-4ubuntu1.5

Ubuntu 20.04 LTS:
apache2 2.4.41-4ubuntu3.9
apache2-bin 2.4.41-4ubuntu3.9

Ubuntu 18.04 LTS:
apache2 2.4.29-1ubuntu4.21
apache2-bin 2.4.29-1ubuntu4.21

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

References:
https://ubuntu.com/security/notices/USN-5212-1
CVE-2021-44224, CVE-2021-44790

Package Information:
https://launchpad.net/ubuntu/+source/apache2/2.4.48-3.1ubuntu3.2
https://launchpad.net/ubuntu/+source/apache2/2.4.46-4ubuntu1.5
https://launchpad.net/ubuntu/+source/apache2/2.4.41-4ubuntu3.9
https://launchpad.net/ubuntu/+source/apache2/2.4.29-1ubuntu4.21

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