An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges, the tss user still has read and write access to the /etc/tcsd.conf file (which contains various settings related to this daemon).
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24331
Reference (s):
- FEDORA:FEDORA-2020-ab3dace708
- URL: https://lists.fedoraproject.org/archives/list/[email protected]/message/SSDL7COIFCZQMUBNAASNMKMX7W5JUHRD/
- https://bugzilla.suse.com/show_bug.cgi?id=1164472
- https://seclists.org/oss-sec/2020/q2/att-135/tcsd_fixes.patch
- https://sourceforge.net/p/trousers/mailman/message/37015817/