ProFTPD 1.3.7 has an out-of-bounds (OOB) read vulnerability in mod_cap via the cap_text.c cap_to_text function.
https://security.gentoo.org/glsa/202003-35
https://github.com/proftpd/proftpd/issues/902
https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES
https://cert-portal.siemens.com/productcert/pdf/ssa-679335.pdf
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00002.html