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[USN-7567-1] ModSecurity vulnerabilities

Posted on 16 June 2025
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7567-1
June 13, 2025

modsecurity-apache vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in ModSecurity.

Software Description:
- modsecurity-apache: Tighten web applications security for Apache

Details:

Simon Studer discovered that ModSecurity incorrectly handled certain
JSON objects. An attacker could possibly use this issue to cause a denial
of service. (CVE-2025-47947)

It was discovered that ModSecurity incorrectly handled requests when
parsing certain form data. An attacker could possibly use this issue to
cause a denial of service. (CVE-2025-48866)

Update instructions:

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

Ubuntu 25.04
libapache2-mod-security2 2.9.8-1.1ubuntu0.1

Ubuntu 24.10
libapache2-mod-security2 2.9.7-1ubuntu0.24.10.1

Ubuntu 24.04 LTS
libapache2-mod-security2 2.9.7-1ubuntu0.24.04.1~esm1
Available with Ubuntu Pro

Ubuntu 22.04 LTS
libapache2-mod-security2 2.9.5-1ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 20.04 LTS
libapache2-mod-security2 2.9.3-1ubuntu0.1+esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libapache2-mod-security2 2.9.2-1ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libapache2-mod-security2 2.9.0-1ubuntu0.1~esm2
Available with Ubuntu Pro
libapache2-modsecurity 2.9.0-1ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 14.04 LTS
libapache2-mod-security2 2.7.7-2ubuntu0.1~esm2
Available with Ubuntu Pro
libapache2-modsecurity 2.7.7-2ubuntu0.1~esm2
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7567-1
CVE-2025-47947, CVE-2025-48866

Package Information:
https://launchpad.net/ubuntu/+source/modsecurity-apache/2.9.8-1.1ubuntu0.1
https://launchpad.net/ubuntu/+source/modsecurity-apache/2.9.7-1ubuntu0.24.10.1

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