USN-5333-1: Apache HTTP Server vulnerabilities

Releases

• Ubuntu 21.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• apache2 - Apache HTTP server

Details

Chamal De Silva discovered that the Apache HTTP Server mod_lua module
incorrectly handled certain crafted request bodies. A remote attacker could
possibly use this issue to cause the server to crash, resulting in a denial
of service. (CVE-2022-22719)

James Kettle discovered that the Apache HTTP Server incorrectly closed
inbound connection when certain errors are encountered. A remote attacker
could possibly use this issue to perform an HTTP Request Smuggling attack.
(CVE-2022-22720)

It was discovered that the Apache HTTP Server incorrectly handled large
LimitXMLRequestBody settings on certain platforms. In certain
configurations, 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-2022-22721)

Ronald Crane discovered that the Apache HTTP Server mod_sed module
incorrectly handled memory. 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-2022-23943)

Update instructions

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

Ubuntu 21.10

• apache2 - 2.4.48-3.1ubuntu3.3
• apache2-bin - 2.4.48-3.1ubuntu3.3

Ubuntu 20.04

• apache2 - 2.4.41-4ubuntu3.10
• apache2-bin - 2.4.41-4ubuntu3.10

Ubuntu 18.04

• apache2 - 2.4.29-1ubuntu4.22
• apache2-bin - 2.4.29-1ubuntu4.22

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

References

• CVE-2022-22719
• CVE-2022-23943
• CVE-2022-22720
• CVE-2022-22721

Related notices

• USN-5333-2: libapache2-mod-proxy-html, apache2, apache2-suexec-custom, apache2-doc, apache2-utils, apache2-bin, apache2-data, apache2-dev, apache2.2-bin, apache2-mpm-prefork, apache2-mpm-worker, apache2-suexec, apache2-suexec-pristine, libapache2-mod-macro, apache2-mpm-event, apache2-mpm-itk