[USN-6370-1] ModSecurity vulnerabilities
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Ubuntu Security Notice USN-6370-1
September 14, 2023
modsecurity-apache vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS (Available with Ubuntu Pro)
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in ModSecurity.
Software Description:
- modsecurity-apache: Tighten web applications security for Apache
Details:
It was discovered that ModSecurity incorrectly handled certain nested JSON
objects. An attacker could possibly use this issue to cause a denial
of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS
and Ubuntu 20.04 LTS. (CVE-2021-42717)
It was discovered that ModSecurity incorrectly handled certain HTTP
multipart requests. A remote attacker could possibly use this issue
to bypass ModSecurity restrictions. (CVE-2022-48279)
It was discovered that ModSecurity incorrectly handled certain file
uploads. A remote attacker could possibly use this issue to cause a
buffer overflow and a firewall failure. This issue only affected
Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2023-24021)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS (Available with Ubuntu Pro):
libapache2-mod-security2 2.9.5-1ubuntu0.1~esm1
Ubuntu 20.04 LTS:
libapache2-mod-security2 2.9.3-1ubuntu0.1
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libapache2-mod-security2 2.9.2-1ubuntu0.1~esm1
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
libapache2-mod-security2 2.9.0-1ubuntu0.1~esm1
libapache2-modsecurity 2.9.0-1ubuntu0.1~esm1
Ubuntu 14.04 LTS (Available with Ubuntu Pro):
libapache2-mod-security2 2.7.7-2ubuntu0.1~esm1
libapache2-modsecurity 2.7.7-2ubuntu0.1~esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6370-1
CVE-2021-42717, CVE-2022-48279, CVE-2023-24021
Package Information:
https://launchpad.net/ubuntu/+source/modsecurity-apache/2.9.3-1ubuntu0.1
A ModSecurityt security update has been released for Ubuntu Linux 14.04 LTS, 16.04 LTS, 18.04 LTS, 20.04 LTS, and 22.04 LTS.
