CVE-2021-23239

A flaw was found in sudoedit. A race condition vulnerability and improper symbolic link resolution could be used by a local unprivileged user to test for the existence of directories and files not normally accessible to the user. This flaw cannot be used to read the content or write to arbitrary files on the file system. The highest threat from this vulnerability is to data confidentiality.

This flaw has been rated as having a security impact of Low. The symbolic link protection is enabled by default in Red Hat Enterprise Linux 7 and 8, preventing this issue from being exploited.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw.