DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs818492

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
proftpd-dfsg (PTS)stretch1.3.5b-4+deb9u5fixed
stretch (security)1.3.5e+r1.3.5b-4+deb9u2fixed
buster (security)1.3.6-4+deb10u4fixed
bullseye, sid1.3.7a-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[wheezy] - proftpd-dfsg <no-dsa> (Minor issue; can be fixed in point release)
Fixed in 1.3.6rc2, 1.3.5b.

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