CVE-2021-35938 Information

Description

A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1964114 https://github.com/rpm-software-management/rpm/pull/1919 https://bugzilla.suse.com/show_bug.cgi?id=1157880 https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033 https://access.redhat.com/security/cve/CVE-2021-35938 https://rpm.org/wiki/Releases/4.18.0