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Fedora 20 ProFTPD 2015:6401 Critical: Unauthenticated Access Risk

fedora
Calendar Grey May 3, 2015
Dist Fedora Esm H88
This patch resolves a significant vulnerability in proftpd for Fedora 20 related to unprivileged entry via mod_copy functions.
Vadim Melihow reported a critical issue with proftpd installations that use the mod_copy module's SITE CPFR/SITE CPTO commands; mod_copy allows these commands to be used by *unauth...

Summary

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 xinetd instead are included.

Update Information:

Vadim Melihow reported a critical issue with proftpd installations that use the mod_copy module's SITE CPFR/SITE CPTO commands; mod_copy allows these commands to be used by *unauthenticated clients*

Upstream report: http://bugs.proftpd.org/show_bug.cgi?id=4169

This update contains a backported fix for this issue.

Note that mod_copy is not loaded/enabled by default in the Fedora package.

Change Log

* Thu Apr 23 2015 Paul Howarth - 1.3.4e-3 - Fix failure to load mod_copy by removing references to function that has not been backported * Wed Apr 15 2015 Paul Howarth - 1.3.4e-2 - Unauthenticated copying of files via SITE CPFR/CPTO was allowed by mod_copy (CVE-2015-3306, http://bugs.proftpd.org/show_bug.cgi?id=4169) - Fix wrong size in memset in mod_sftp_pam causing compiler warning * Mon Feb 16 2015 Paul Howarth - 1.3.4e-1 - Update to 1.3.4e - Fixed numerous upstream-reported bugs: - Spurious log messages at session close (bug 3945) - LogFormat %f variable not resolved properly for SFTP renames (bug 3947) - mod_delay allows too-large values, leading to client hang on authentication (bug 3858) - Null pointer dereference for mod_ldap logins when LDAPDefaultAuthScheme not configured (bug 3951) - scp downloads result in segfault (bug 3954) - ProFTPD configuration with thousands of / sections leads to slow logins (bug 3957) - mod_sftp does not honor / sections when symlinks are involved (bug 3959) - Directory creation does not honor single-parameter Umask setting (bug 3958) - Directory creation fails (chmod(2) EPERM) when root privs are used in some cases (bug 3962) - Authentication error on Cygwin due to bad code (bug 3972) - mod_sftp can be forced to allocate too much memory for keyboard-interactive authentication (bug 3973, CVE-2013-4359) - PathDenyFilter directive does not work as expected for SFTP sessions (bug 3974) - Improve permission setting when creating directories (bug 3963) - Null pointer dereference in mod_exec with ExecOption useStdin (bug 3981) - Support filesystems that do not support chmod(2)/chown(2), e.g. FAT/ExFAT (bug 3986) - SSL session caching modules use incorrect OpenSSL cache mode flags, breaking session caching (bug 3991) - ProFTPD should not use fd 2 (stderr) for files (bug 3970) - RSA signature issue when connecting using PuTTY/WinSCP (bug 3992) - mod_sftp fails key exchange for 8192-bit DH group (bug 4001) - IgnoreSCPUploadPerms SFTPOption not honored properly for SCP directory upload (bug 4004) - RADIUS "service-type" attribute encoded with wrong length on 64-bit system (bug 4006) - SCP upload of shorter file does not completely overwrite existing file of same name (bug 4013) - "Directory not empty" error when creating directory is misleading (bug 4022) - Restarting proftpd with mod_sftp fails due to permissions on SFTPHostKey file (bug 4032) - SSH publickey authentication fails with "MaxLoginAttempts 1" (bug 4034) - ALLO command failed because of bad size check (bug 4046) - Race condition in mod_ban can lead to segfault of all new connections (bug 4048) - MIC command between RNFR and RNTO should not be rejected (bug 4042) - mod_facl prevents a normal SIGHUP reload (bug 4044) - Drop patches for issues resolved in new upstream release - Anonymous upload directory specification needs to be slightly different if mod_vroot is in use (#1045922)
- Backport some changes from upstream's 1.3.5 release to get the API tests to build - Use %license where possible * Fri Dec 20 2013 Paul Howarth 1.3.4d-5 - Fix support for 8192-bit DH parameters (#1044586) - Add 3072-bit and 7680-bit DH parameters (upstream bug 4002)

References


[ 1 ] Bug #1212386 - CVE-2015-3306 proftpd: unauthenticated copying of files via SITE CPFR/CPTO allowed by mod_copy https://bugzilla.redhat.com/show_bug.cgi?id=1212386

Update Instructions

This update can be installed with the "yum" update program. Use su -c 'yum update proftpd' at the command line. For more information, refer to "Managing Software with yum", available at .

Severity
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Name: proftpd
Product: Fedora 20
Version: 1.3.4e
Release: 3.fc20
Summary: Flexible, stable and highly-configurable FTP server

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