The mod_tls module in ProFTPD before 1.3.5b and 1.3.6 before 1.3.6rc2 does not properly handle the TLSDHParamFile directive, which might cause a weaker than intended Diffie-Hellman (DH) key to be used and consequently allow attackers to have unspecified impact via unknown vectors.
http://bugs.proftpd.org/show_bug.cgi?id=4230
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179109.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179143.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179905.html
http://lists.opensuse.org/opensuse-updates/2016-05/msg00080.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00045.html
http://proftpd.org/docs/NEWS-1.3.5b
http://proftpd.org/docs/NEWS-1.3.6rc2
Source: MITRE
Published: 2016-04-05
Updated: 2018-10-30
Type: CWE-254
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH