A proftpd security update has been released for Fedora 31

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Fedora Update Notification
FEDORA-2019-bfacf1e958
2019-12-08 01:16:01.293717
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Name : proftpd
Product : Fedora 31
Version : 1.3.6b
Release : 2.fc31
URL : http://www.proftpd.org/
Summary : Flexible, stable and highly-configurable FTP server
Description :
ProFTPD is an enhanced FTP server with a focus toward simplicity, security,
and ease of configuration. It features a very Apache-like configuration
syntax, and a highly customizable server infrastructure, including support for
multiple 'virtual' FTP servers, anonymous FTP, and permission-based directory
visibility.

This package defaults to the standalone behavior of ProFTPD, but all the
needed scripts to have it run by systemd instead are included.

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Update Information:

This update addresses a number of bugs affecting processing of CRLs in mod_tls,
including possible null pointer dereferences and missing some checks. Thanks to
Lionel Debroux for reporting them.
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ChangeLog:

* Fri Nov 29 2019 Paul Howarth - 1.3.6b-2
- Fix handling of CRL lookups by properly using issuer for lookups, and
guarding against null pointers (GH#859, GH#861, CVE-2019-19269)
* Sun Oct 20 2019 Paul Howarth - 1.3.6b-1
- Update to 1.3.6b
- Fixed pre-authentication remote denial-of-service issue
(CVE-2019-18217, https://github.com/proftpd/proftpd/issues/846)
* Sun Oct 13 2019 Paul Howarth - 1.3.6a-1
- Update to 1.3.6a
- Configure script wrongly detected AIX lastlog functions
( http://bugs.proftpd.org/show_bug.cgi?id=4304)
- AllowChrootSymlinks off could cause login failures depending on filesystem
permissions ( http://bugs.proftpd.org/show_bug.cgi?id=4306)
- mod_ctrls: error: unable to bind to local socket: Address already in use
( https://github.com/proftpd/proftpd/issues/501)
- Failed to handle multiple %{env:...} variables in single word in
configuration ( https://github.com/proftpd/proftpd/issues/507)
- mod_sftp failed to check shadow password information when publickey
authentication used ( http://bugs.proftpd.org/show_bug.cgi?id=4308)
- Use of "AllowEmptyPasswords off" broke SFTP/SCP logins
( http://bugs.proftpd.org/show_bug.cgi?id=4309)
- Use of mod_facl as static module caused ProFTPD to die on SIGHUP/restart
( http://bugs.proftpd.org/show_bug.cgi?id=4310)
- Use of curve25519-sha256@libssh.org SSH2 key exchange sometimes failed
( https://github.com/proftpd/proftpd/issues/556)
- Close extra file descriptors at startup
( http://bugs.proftpd.org/show_bug.cgi?id=4312)
- with AuthAliasOnly in effect did not work as expected
( http://bugs.proftpd.org/show_bug.cgi?id=4314)
- CreateHome NoRootPrivs only worked partially
( https://github.com/proftpd/proftpd/issues/568)
- SFTP OPEN response included attribute flags that are not actually provided
( https://github.com/proftpd/proftpd/issues/578)
- Truncation of file while being downloaded with sendfile enabled caused
timeouts due to infinite loop ( http://bugs.proftpd.org/show_bug.cgi?id=4318)
- FTP uploads frequently broke due to "Interrupted system call" error
( http://bugs.proftpd.org/show_bug.cgi?id=4319)
- Site-to-site transfers over TLS failed
( https://github.com/proftpd/proftpd/issues/618)
- Can't see symlinks using any FTP client when using MLSD
( http://bugs.proftpd.org/show_bug.cgi?id=4322)
- mod_tls 1.3.6 failed to compile using OpenSSL 0.9.8e
( http://bugs.proftpd.org/show_bug.cgi?id=4325)
- Using MaxClientsPerHost 1 in section denied logins
( http://bugs.proftpd.org/show_bug.cgi?id=4326)
- SQLNamedConnectInfo with different backend database did not work properly
( https://github.com/proftpd/proftpd/issues/642)
- Segfault with mod_sftp+mod_sftp_pam after successful authentication using
keyboard-interactive method ( https://github.com/proftpd/proftpd/issues/656)
- autoconf always failed to detect support for FIPS
( https://github.com/proftpd/proftpd/issues/660)
- SFTP connections failed when using "arcfour256" cipher
( https://github.com/proftpd/proftpd/issues/663)
- mod_auth_otp failed to build with OpenSSL 1.1.x
( http://bugs.proftpd.org/show_bug.cgi?id=4335)
- scp broken on FreeBSD 11 ( http://bugs.proftpd.org/show_bug.cgi?id=4341)
- Update mod_sftp to handle changed APIs in OpenSSL 1.1.x releases
( https://github.com/proftpd/proftpd/issues/674)
- Infinite loop possible in mod_sftp's set_sftphostkey() function
( http://bugs.proftpd.org/show_bug.cgi?id=4356)
- Some ASCII text files corrupted when downloading
( http://bugs.proftpd.org/show_bug.cgi?id=4352)
- Properly use the --includedir, --libdir configure variables in the
generated proftpd.pc pkgconfig file
( https://github.com/proftpd/proftpd/issues/797)
- Reading invalid SSH key from database resulted in unexpected/unlogged
disconnect failures ( http://bugs.proftpd.org/show_bug.cgi?id=4350)
- Symlink navigation broken after 1.3.6 update
( http://bugs.proftpd.org/show_bug.cgi?id=4332)
- Unable to connect to ProFTPD using TLSSessionTickets and TLSv1.3
( https://github.com/proftpd/proftpd/issues/795)
- SITE CPFR/CPTO did not honor configurations
( http://bugs.proftpd.org/show_bug.cgi?id=4372)
- Using "TLSProtocol SSLv23" did not enable all protocol versions
( https://github.com/proftpd/proftpd/issues/807)
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References:

[ 1 ] Bug #1777975 - CVE-2019-19269 proftpd: NULL pointer dereference when validating the certificate of a client connecting to the server
https://bugzilla.redhat.com/show_bug.cgi?id=1777975
[ 2 ] Bug #1778258 - CVE-2019-19270 proftpd: failure to check for the appropriate field of a CRL entry prevents some valid CRLs from being taken into account
https://bugzilla.redhat.com/show_bug.cgi?id=1778258
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2019-bfacf1e958' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys