An issue was discovered in KDE Partition Manager 4.1.0 before 4.2.0. The kpmcore_externalcommand helper contains a logic flaw in which the service invoking D-Bus is not properly checked. An attacker on the local machine can replace /etc/fstab, and execute mount and other partitioning related commands, while KDE Partition Manager is running. the mount command can then be used to gain full root privileges.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27187
Reference (s):
- https://kde.org/info/security/advisory-20201017-1.txt
- GENTOO:GLSA-202011-03
- URL: https://security.gentoo.org/glsa/202011-03
- https://bugzilla.redhat.com/show_bug.cgi?id=1890199
- https://github.com/KDE/partitionmanager/compare/v4.1.0 v4.2.0