The SUSE operating system must remove all outdated software components after updated versions have been installed.

From SLES 12 Security Technical Implementation Guide

Associated with: CCI-002617

SV-91859r2_rule The SUSE operating system must remove all outdated software components after updated versions have been installed.

Vulnerability discussion

Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some information technology products may remove older versions of software automatically from the information system.

Check content

Verify the SUSE operating system removes all outdated software components after updated version have been installed by running the following command: # grep -i upgraderemovedroppedpackages /etc/zypp/zypp.conf solver.upgradeRemoveDroppedPackages = true If "solver.upgradeRemoveDroppedPackages" is commented out, is set to "false", or is missing completely, this is a finding.

Fix text

Configure the SUSE operating system to remove all outdated software components after an update by editing the following line in "/etc/zypp/zypp.conf" to match the one provided below: solver.upgradeRemoveDroppedPackages = true

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.