Lynis Security Controls
PKGS-7398 - Package audit tool
Most operating systems provide a tool to check for security packages, to fix vulnerable versions of installed software. When possible, install such tool.
How to solve
Software packages are an important part of the system, including its primary goal and duties. On a daily basis, new security flaws are found, many which will affect the ones we have installed. These flaws, also named software vulnerabilities, can cause a lot of troubles for your system. This is especially true when such a software package can be remotely attacked and misused. A successful could result into your system starting to send spam messages, leak confidential data, or become part of a botnet.
With a package audit tool it is easy to find which packages need to be updated. In most cases packages will be flagged with a security warning when a known vulnerability has been fixed. Newer distributions usually have an audit option as part of the package manager. For other systems, a little bit of research is needed to discover a way to find vulnerable packages. For example the yum-security package is an example used for older systems running RHEL, Fedora, or CentOS.
- Audit SuSE with Zypper (Vulnerable package detection with Zypper)
- Available security updates with DNF (Show vulnerable packages with DNF package manager)
- Vulnerable packages on NetBSD (Using pkg_admin on NetBSD to detect vulnerable packages)
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Linux and Unix System Hardening
This information is provided as part of the Lynis community project. It is related to Lynis control PKGS-7398. All information should be considered as-is, without guarantees. Any advice or snippets should be tested before implementing in production environments.
Lynis is a technical security audit tool for Unix flavors like Linux, macOS, AIX, Solaris, and *BSD. It is open source software and free to use. The project has an active community, including open development via GitHub.
Need more advanced features, like vulnerability scanning, or reporting installed software packages? Lynis Enterprise will collect more data and present it with an easy to use web interface.
Gain additional benefits: automating security audits, reporting, and the implementation of related security measures.
- Centralized management
- Prioritized plans
- Integration (API)
- Improvement snippets for tools like Ansible, Chef, Cfengine, Puppet, and SaltStack