USN-5212-2: Apache HTTP Server vulnerabilities
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Ubuntu Security Notice USN-5212-2
January 10, 2022
apache2 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- 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:
USN-5212-1 fixed several vulnerabilities in Apache. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory 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 16.04 ESM:
apache2 2.4.18-2ubuntu3.17+esm4
apache2-bin 2.4.18-2ubuntu3.17+esm4
Ubuntu 14.04 ESM:
apache2 2.4.7-1ubuntu4.22+esm3
apache2-bin 2.4.7-1ubuntu4.22+esm3
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5212-2
https://ubuntu.com/security/notices/USN-5212-1
CVE-2021-44224, CVE-2021-44790
An Apache HTTP security update has been released for Ubuntu Linux 14.04 ESM and 16.04 ESM.
