CVE-2020-10737

A race condition was found in the mkhomedir tool shipped with the oddjob
package in versions before 0.34.5 and 0.34.6 wherein, during the home
creation, mkhomedir copies the /etc/skel directory into the newly created
home and changes its ownership to the home’s user without properly checking
the homedir path. This flaw allows an attacker to leverage this issue by
creating a symlink point to a target folder, which then has its ownership
transferred to the new home directory’s unprivileged user.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=960089&gt;
• <https://bugzilla.redhat.com/show_bug.cgi?id=1833042&gt;