USN-6520-1: Linux kernel StarFive vulnerabilities Ubuntu security notices

The fapolicyd framework trusts files contained in the RPM database. You can modify or the files in /etc/fapolicyd/trust.d either directly using a text editor or through fapolicyd-cli commands. In this configuration, the SSS threshold t is set to 1 and the clevis luks bind command successfully reconstructs the secret if at least one from two listed tang servers is available. Red Hat Enterprise Linux security auditing capabilities are based on the Security Content Automation Protocol (SCAP) standard. SCAP is a multi-purpose framework of specifications that supports automated configuration, vulnerability and patch checking, technical control compliance activities, and security measurement.

  • This is helpful in applying the principle of least privilege — instead of giving a process total root privileges, you can grant them only a specific subset instead.
  • We’ve added comments using the hash symbol to outline the purpose of these network parameters.
  • Since Red Hat Enterprise Linux 9.2, you can use the cryptsetup reencrypt command for both the LUKS versions to encrypt the disk.
  • For systems connected to the internet and accessed by public users, disabling SELInux can be catastrophic for your servers.
  • You can increase password strength by making sure that users can’t set or use weak passwords.
  • For example, the following filesystems should be split into different partitions.

See “2.4 hidepid” and “2.7 Restricting access to sysfs” in Madaidan’s guide. Distributions based on Debian or Ubuntu typically use the Uncomplicated Firewall (ufw). As the name suggests, it is much less sophisticated than firewalld. One notable missing feature is the ability to apply different firewall rules for different connections (see zones in firewalld). Red Hat distributions (such as Fedora) and openSUSE typically use firewalld. Red Hat maintains extensive documentation about firewalld and its graphical frontend firewall-config.

3 Boot parameters

You can also perform configuration compliance scanning to harden your system security. If you use smart cards, start troubleshooting by checking the rules in the system-provided policy file at /usr/share/polkit-1/actions/org.debian.pcsc-lite.policy. You can add your custom rule files to the policy in the /etc/polkit-1/rules.d/ directory, for example, 03-allow-pcscd.rules.

  • This is simply a known weakness in the software, which can lead to instability or even a security breach.
  • Another effective technique can be to write randomly generated passwords down and store them in a safe place, such as in a wallet, purse, or document safe.
  • Linux systems are inherently hard to crack due to their underlying design principles.
  • Arch based systems can obtain the LKRG DKMS package via an AUR package.

Doing so can have adverse effects on productivity and efficiency of your systems and network. Performing an assessment shows an overview, which can turn up false positives and false negatives. A false positive is a result, where the tool finds vulnerabilities which in reality do not exist.

15. Deploying Tang as a container

This enables you to audit the system in an automated way for compliance with security standards. Compliance policies can vary substantially across organizations and even across different systems within the same organization. linux hardening and security lessons Differences among these policies are based on the purpose of each system and its importance for the organization. Custom software settings and deployment characteristics also raise a need for custom policy checklists.

There is no need to run X Window desktops like KDE or GNOME on your dedicated LAMP server. You can remove or disable them to increase security of server and performance. To disable simple open the file ‘/etc/inittab‘ and set run level to 3. If you wish to remove it completely from the system use the below command.

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