Fedora 28: mysql-mmm Security Update
Summary
MMM (MySQL Master-Master Replication Manager) is a set of flexible scripts
to perform monitoring/failover and management of MySQL Master-Master
replication configurations (with only one node writable at any time). The
toolset also has the ability to read balance standard master/slave
configurations with any number of slaves, so you can use it to move virtual
IP addresses around a group of servers depending on whether they are behind
in replication. In addition to that, it also has scripts for data backups,
resynchronization between nodes etc.
# Multi-Master Replication Manager for MySQL mmm_agentd Remote Command Injection
Vulnerabilities This update adds data sanitization to inputs for the mmm agent.
Multiple exploitable remote command injection vulnerabilities exist in the MySQL
Master-Master Replication Manager (MMM) mmm_agentd daemon 2.2.1. mmm_agentd
commonly runs with root privileges and does not require authentication by
default. A specially crafted MMM protocol message can cause a shell command
injection resulting in arbitrary command execution with the privileges of the
mmm_agentd process. An attacker that can initiate a TCP session with mmm_agentd
can trigger these vulnerabilities. The impact of these vulnerabilities can be
lessened by configuring mmm_agentd to require TLS mutual authentication and by
using network ACLs to prevent hosts other than legitimate mmm_mond hosts from
accessing mmm_agentd. For example on Linux iptables rules can be used to block
access to the port mmm_agent is listening on from all hosts except the
mmm_monitor. The configuration of ssl can be used where firewall rules are not
practical. See Socket Documentation https://mysql-mmm.org/mysql-mmm.html
Add to mmm_common.conf
/etc/ssl/certs/www..bundle.crt key_file
/etc/ssl/certs/www..key ca_file /etc/ssl/certs/ca-bundle.crt
# or ca-certificates.crt Now only those with access to the
private key can send commands. Whilst your web server certificate will do the
job, you may consider registering a dedicated certificate just for this task.
NOTE: By now there are a some good alternatives to MySQL-MMM. Maybe you
want to check out Galera Cluster which is part of MariaDB Galera Cluster
and Percona XtraDB Cluster. - https://mysql-mmm.org/ - https://galeracluster.com/
* Wed May 2 2018 David Beveridge
- Patch for mmm_agentd Remote Command Injection Vulnerabilities
- TALOS-2017-0501, CVE-2017-14474 - CVE-2017-14481
* Thu Feb 8 2018 Fedora Release Engineering
- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
[ 1 ] Bug #1575161
https://bugzilla.redhat.com/show_bug.cgi?id=1575161
su -c 'dnf upgrade --advisory FEDORA-2018-ca5321b5ff' at the command
line. For more information, refer to the dnf documentation available at
https://dnf.readthedocs.io/en/latest/command_ref.html
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/security/
package-announce mailing list -- package-announce@lists.fedoraproject.org
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FEDORA-2018-ca5321b5ff 2018-05-15 20:03:56.912735 Product : Fedora 28 Version : 2.2.1 Release : 20.fc28 URL : https://mysql-mmm.org/ Summary : Multi-Master Replication Manager for MySQL Description : MMM (MySQL Master-Master Replication Manager) is a set of flexible scripts to perform monitoring/failover and management of MySQL Master-Master replication configurations (with only one node writable at any time). The toolset also has the ability to read balance standard master/slave configurations with any number of slaves, so you can use it to move virtual IP addresses around a group of servers depending on whether they are behind in replication. In addition to that, it also has scripts for data backups, resynchronization between nodes etc. # Multi-Master Replication Manager for MySQL mmm_agentd Remote Command Injection Vulnerabilities This update adds data sanitization to inputs for the mmm agent. Multiple exploitable remote command injection vulnerabilities exist in the MySQL Master-Master Replication Manager (MMM) mmm_agentd daemon 2.2.1. mmm_agentd commonly runs with root privileges and does not require authentication by default. A specially crafted MMM protocol message can cause a shell command injection resulting in arbitrary command execution with the privileges of the mmm_agentd process. An attacker that can initiate a TCP session with mmm_agentd can trigger these vulnerabilities. The impact of these vulnerabilities can be lessened by configuring mmm_agentd to require TLS mutual authentication and by using network ACLs to prevent hosts other than legitimate mmm_mond hosts from accessing mmm_agentd. For example on Linux iptables rules can be used to block access to the port mmm_agent is listening on from all hosts except the mmm_monitor. The configuration of ssl can be used where firewall rules are not practical. See Socket Documentation https://mysql-mmm.org/mysql-mmm.html Add to mmm_common.conf type ssl cert_file /etc/ssl/certs/www..bundle.crt key_file /etc/ssl/certs/www..key ca_file /etc/ssl/certs/ca-bundle.crt # or ca-certificates.crt Now only those with access to the private key can send commands. Whilst your web server certificate will do the job, you may consider registering a dedicated certificate just for this task. NOTE: By now there are a some good alternatives to MySQL-MMM. Maybe you want to check out Galera Cluster which is part of MariaDB Galera Cluster and Percona XtraDB Cluster. - https://mysql-mmm.org/ - https://galeracluster.com/ * Wed May 2 2018 David Beveridge 2.2.1-20 - Patch for mmm_agentd Remote Command Injection Vulnerabilities - TALOS-2017-0501, CVE-2017-14474 - CVE-2017-14481 * Thu Feb 8 2018 Fedora Release Engineering - 2.2.1-19 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild [ 1 ] Bug #1575161 https://bugzilla.redhat.com/show_bug.cgi?id=1575161 su -c 'dnf upgrade --advisory FEDORA-2018-ca5321b5ff' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html 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/security/ package-announce mailing list -- package-announce@lists.fedoraproject.org To unsubscribe send an email to package-announce-leave@lists.fedoraproject.org
Change Log
References
Update Instructions
