USN-5212-1: Apache HTTP Server vulnerabilities

Releases

• Ubuntu 21.10
• Ubuntu 21.04
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• 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

• apache2 - 2.4.41-4ubuntu3.9
• apache2-bin - 2.4.41-4ubuntu3.9

Ubuntu 18.04

• 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

• CVE-2021-44790
• CVE-2021-44224

Related notices

• USN-5212-2: apache2-data, apache2, apache2-suexec, apache2.2-bin, apache2-doc, apache2-suexec-custom, apache2-mpm-event, libapache2-mod-macro, apache2-mpm-itk, apache2-mpm-prefork, apache2-mpm-worker, libapache2-mod-proxy-html, apache2-dev, apache2-bin, apache2-utils, apache2-suexec-pristine