tcmu-runner is vulnerable to directory traversal. A remote attacker is able to read or write files to an arbitrary location on the file system in an XCOPY request.
www.openwall.com/lists/oss-security/2021/01/13/5
access.redhat.com/errata/RHSA-2021:1452
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1916045
bugzilla.suse.com/attachment.cgi?id=844938
bugzilla.suse.com/show_bug.cgi?id=1178372
github.com/open-iscsi/tcmu-runner/pull/644
nvd.nist.gov/vuln/detail/CVE-2021-3139
www.openwall.com/lists/oss-security/2021/01/12/12