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Ubuntu Security Notice USN-6506-1

Ubuntu Security Notice USN-6506-1
Posted Nov 22, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6506-1 - David Shoon discovered that the Apache HTTP Server mod_macro module incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. Prof. Sven Dietrich, Isa Jafarov, Prof. Heejo Lee, and Choongin Lee discovered that the Apache HTTP Server incorrectly handled certain HTTP/2 connections. A remote attacker could possibly use this issue to cause the server to consume resources, leading to a denial of service. This issue only affected Ubuntu 23.04, and Ubuntu 23.10.

tags | advisory, remote, web, denial of service
systems | linux, ubuntu
advisories | CVE-2023-31122, CVE-2023-43622, CVE-2023-45802
SHA-256 | 8a919d1a4d307c69872670d645ac6969f558a3c26282d75583807e9eb42825c5

Ubuntu Security Notice USN-6506-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6506-1
November 22, 2023

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

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

- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Apache HTTP Server.

Software Description:
- apache2: Apache HTTP server

Details:

David Shoon discovered that the Apache HTTP Server mod_macro module
incorrectly handled certain memory operations. A remote attacker could
possibly use this issue to cause the server to crash, resulting in a denial
of service. (CVE-2023-31122)

Prof. Sven Dietrich, Isa Jafarov, Prof. Heejo Lee, and Choongin Lee
discovered that the Apache HTTP Server incorrectly handled certain HTTP/2
connections. A remote attacker could possibly use this issue to cause the
server to consume resources, leading to a denial of service. This issue
only affected Ubuntu 23.04, and Ubuntu 23.10. (CVE-2023-43622)

Will Dormann and David Warren discovered that the Apache HTTP Server
incorrectly handled memory when handling HTTP/2 connections. A remote
attacker could possibly use this issue to cause the server to consume
resources, leading to a denial of service. (CVE-2023-45802)

Update instructions:

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

Ubuntu 23.10:
apache2 2.4.57-2ubuntu2.1

Ubuntu 23.04:
apache2 2.4.55-1ubuntu2.1

Ubuntu 22.04 LTS:
apache2 2.4.52-1ubuntu4.7

Ubuntu 20.04 LTS:
apache2 2.4.41-4ubuntu3.15

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

References:
https://ubuntu.com/security/notices/USN-6506-1
CVE-2023-31122, CVE-2023-43622, CVE-2023-45802

Package Information:
https://launchpad.net/ubuntu/+source/apache2/2.4.57-2ubuntu2.1
https://launchpad.net/ubuntu/+source/apache2/2.4.55-1ubuntu2.1
https://launchpad.net/ubuntu/+source/apache2/2.4.52-1ubuntu4.7
https://launchpad.net/ubuntu/+source/apache2/2.4.41-4ubuntu3.15

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