GLSA 201711-04: MariaDB, MySQL: Root privilege escalation

Severity:normal
Title:MariaDB, MySQL: Root privilege escalation
Date:11/10/2017
Bugs: #635704, #635706
ID:201711-04

Synopsis

A vulnerability was discovered in MariaDB and MySQL which may allow local users to gain root privileges.

Background

MySQL is a popular multi-threaded, multi-user SQL server. MariaDB is an enhanced, drop-in replacement for MySQL.

Affected packages

Package Vulnerable Unaffected Architecture(s)
dev-db/mysql < 5.6.36-r1 >= 5.6.36-r1 All supported architectures
dev-db/mariadb < 10.0.30-r1 >= 10.0.30-r1 All supported architectures

Description

The Gentoo installation scripts before 2017-09-29 have chown calls for user-writable directory trees, which allows local users to gain privileges by leveraging access to the mysql account for creation of a link.

Impact

A local attacker could escalate privileges to root.

Workaround

There is no known workaround at this time.

Resolution

All MariaDB users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-db/mariadb-10.0.30-r1"
    

All MySQL users should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose ">=dev-db/mysql-5.6.36-r1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201711-04.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

License

Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

Thank you!