Race condition in the post-installation script (mysql-server-5.5.postinst) for MySQL Server 5.5 for Debian GNU/Linux and Ubuntu Linux creates a configuration file with world-readable permissions before restricting the permissions, which allows local users to read the file and obtain sensitive information such as credentials.

CVE-2014-4274

Insecure handling of a temporary file that could lead to abritrary execution of code through the creation of a mysql configuration file pointing to an attacker-controlled plugin_dir.

CVE-2013-2162

Insecure creation of the debian.cnf credential file. Credentials could be stolen by a local user monitoring that file while the package gets installed.

CVE-2014-0001

Buffer overrun in the MySQL client when the server sends a version string that is too big for the allocated buffer.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of MySQL installed on the remote host is 5.5.x prior to 5.5.33.  It is, therefore, potentially affected by a race condition in the post-installation script of the MySQL server package (mysql-server-5.5.postinst) that creates the configuration file '/etc/mysql/debian.cnf' with world-readable permissions before restricting the permissions.  This allows local users to read the file and obtain credentials for the privileged 'debian-sys-maint' user.

Several issues have been discovered in the MySQL database server. The vulnerabilities are addressed by upgrading MySQL to a new upstream version, 5.5.33, which includes additional changes, such as performance improvements, bug fixes, new features, and possibly incompatible changes. Please see the MySQL 5.5 Release Notes for further details :

  -     http://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-     32.html
  -     http://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-     33.html

In addition this update fixes two issues affecting specifically the mysql-5.5 Debian package :

A race condition in the post-installation script of the mysql-server-5.5 package creates the configuration file '/etc/mysql/debian.cnf' with world-readable permissions before restricting the permissions, which allows local users to read the file and obtain sensitive information such as credentials for the debian-sys-maint to perform administration tasks. (CVE-2013-2162 )

Matthias Reichl reported that the mysql-5.5 package misses the patches applied previous in Debian's mysql-5.1 to drop the database 'test' and the permissions that allow anonymous access, without a password, from localhost to the 'test' database and any databases starting with'test_'. This update reintroduces these patches for the mysql-5.5 package.

Existing databases and permissions are not touched. Please refer to the NEWS file provided with this update for further information.

Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues.

MySQL has been updated to 5.1.70 in Ubuntu 10.04 LTS. Ubuntu 12.04 LTS, Ubuntu 12.10 and Ubuntu 13.04 have been updated to MySQL 5.5.32.

In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

Please see the following for more information:
http://dev.mysql.com/doc/relnotes/mysql/5.1/en/news-5-1-70.html http://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-32.html http://www.oracle.com/technetwork/topics/security/cpujuly2013-1899826.
html.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
82220	Debian DLA-75-1 : mysql-5.1 security update	Nessus	Debian Local Security Checks	high
71862	MySQL debian.cnf Plaintext Credential Disclosure	Nessus	Databases	low
71474	Debian DSA-2818-1 : mysql-5.5 - several vulnerabilities	Nessus	Debian Local Security Checks	medium
69073	Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : mysql-5.5, mysql-dfsg-5.1 vulnerabilities (USN-1909-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2013-2162

medium

Tenable Plugins

high

low

medium

medium