An update for mysql is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

MySQL is a multi-user, multi-threaded SQL database server. It consists of the MySQL server daemon (mysqld) and many client programs and libraries.

Security Fix(es) :

* It was discovered that the MySQL logging functionality allowed writing to MySQL configuration files. An administrative database user, or a database user with FILE privileges, could possibly use this flaw to run arbitrary commands with root privileges on the system running the database server. (CVE-2016-6662)

* A race condition was found in the way MySQL performed MyISAM engine table repair. A database user with shell access to the server running mysqld could use this flaw to change permissions of arbitrary files writable by the mysql system user. (CVE-2016-6663, CVE-2016-5616)

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2016:2130 advisory.

    MySQL is a multi-user, multi-threaded SQL database server. It consists of the MySQL server daemon, mysqld,     and many client programs.

    The following packages have been upgraded to a newer upstream version: mysql55-mysql (5.5.52).

    Security Fix(es):

    * It was discovered that the MySQL logging functionality allowed writing to MySQL configuration files. An     administrative database user, or a database user with FILE privileges, could possibly use this flaw to run     arbitrary commands with root privileges on the system running the database server. (CVE-2016-6662)

    * This update fixes several vulnerabilities in the MySQL database server. Information about these flaws     can be found on the Oracle Critical Patch Update Advisory page, listed in the References section.
    (CVE-2016-3492, CVE-2016-5612, CVE-2016-5616, CVE-2016-5617, CVE-2016-5624, CVE-2016-5626, CVE-2016-5629,     CVE-2016-8283)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2016:2749 advisory.

    MySQL is a multi-user, multi-threaded SQL database server. It consists of the MySQL server daemon, mysqld,     and many client programs.

    The following packages have been upgraded to a newer upstream version: rh-mysql56-mysql (5.6.34).

    Security Fix(es):

    * It was discovered that the MySQL logging functionality allowed writing to MySQL configuration files. An     administrative database user, or a database user with FILE privileges, could possibly use this flaw to run     arbitrary commands with root privileges on the system running the database server. (CVE-2016-6662)

    * A race condition was found in the way MySQL performed MyISAM engine table repair. A database user with     shell access to the server running mysqld could use this flaw to change permissions of arbitrary files     writable by the mysql system user. (CVE-2016-6663, CVE-2016-5616)

    * A flaw was found in the way the mysqld_safe script handled creation of error log file. The mysql     operating system user could use this flaw to escalate their privileges to root. (CVE-2016-6664,     CVE-2016-5617)

    * This update fixes several vulnerabilities in the MySQL database server. Information about these flaws     can be found on the Oracle Critical Patch Update Advisory pages, listed in the References section.
    (CVE-2016-3492, CVE-2016-5507, CVE-2016-5626, CVE-2016-5629, CVE-2016-8283)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of MySQL installed on the remote host is version 5.7.x prior to 5.7.16 and is affected by multiple issues :

 - An unspecified flaw exists related to the Security: Encryption subcomponent. This may allow an authenticated remote attacker to disclose potentially sensitive information. No further details have been provided by the vendor. (CVE-2016-5584)
 - A flaw exists that may allow a local attacker with DBA permissions to gain elevated privileges. The issue is due to the program not properly restricting the ability to write to configuration files (e.g. my.cnf), combined with it loading a configuration file from specific locations that current versions do not use (e.g. /var/lib/mysql/my.cnf). This may allow an attacker to leverage specially crafted queries to use logging functionality to create new files or append custom content to existing files. By placing a custom .cnf file that MySQL will load, with a 'malloc_lib=' directive pointing to an attacker controlled 'mysql_hookandroot_lib.so' file, the attacker can cause MySQL to read the configuration file and load the malicious library the next time it starts. This can allow the attacker to gain root privileges. (CVE-2016-6662)

The version of MySQL installed on the remote host is version 5.5.x prior to 5.5.53 and is affected by multiple issues :

 - An unspecified flaw exists related to the Security: Encryption subcomponent. This may allow an authenticated remote attacker to disclose potentially sensitive information. No further details have been provided by the vendor. (CVE-2016-5584)
 - A flaw exists that may allow a local attacker with DBA permissions to gain elevated privileges. The issue is due to the program not properly restricting the ability to write to configuration files (e.g. my.cnf), combined with it loading a configuration file from specific locations that current versions do not use (e.g. /var/lib/mysql/my.cnf). This may allow an attacker to leverage specially crafted queries to use logging functionality to create new files or append custom content to existing files. By placing a custom .cnf file that MySQL will load, with a 'malloc_lib=' directive pointing to an attacker controlled 'mysql_hookandroot_lib.so' file, the attacker can cause MySQL to read the configuration file and load the malicious library the next time it starts. This can allow the attacker to gain root privileges. (CVE-2016-6662)

MariaDB is a community-developed fork of the MySQL relational database.  The version of MariaDB installed on the remote host is 5.5.x earlier than 5.5.51, and is therefore affected by multiple vulnerabilities :

 - A denial of service vulnerability exists in the 'emb_stmt_execute()' function in file 'libmysqld/lib_sql.cc' when handling queries.  An authenticated, remote attacker can exploit this to crash the database.
 - A flaw in the 'check_log_path()' function in 'sql/sys_vars.cc' that may allow an authenticated attacker with DBA permissions to gain elevated privileges.  The issue is due to the program not properly restricting the ability to write to configuration files (e.g. my.cnf), combined with it loading a configuration file from specific locations that current versions do not use (e.g. '/var/lib/mysql/my.cnf').  This may allow an attacker to leverage specially crafted queries to use logging functionality to create new files or append custom content to existing files.  By placing a custom '.cnf' file that MySQL will load, with a 'malloc_lib=' directive pointing to an attacker controlled 'mysql_hookandroot_lib.so' file, the attacker can cause MySQL to read the configuration file and load the malicious library the next time it starts.  This can allow the attacker to gain root privileges.
 - A denial of service vulnerability exists in the 'st_select_lex_unit::cleanup()' function within file 'sql/sql_union.cc' when handling 'UNION' queries during 'JOIN' cleanup.  An authenticated, remote attacker can exploit this to crash the database.

The version of MySQL installed on the remote host is version 5.6.x prior to 5.6.34 and is affected by multiple issues :

 - An unspecified flaw exists related to the Security: Encryption subcomponent. This may allow an authenticated remote attacker to disclose potentially sensitive information. No further details have been provided by the vendor. (CVE-2016-5584)
 - A flaw exists that may allow a local attacker with DBA permissions to gain elevated privileges. The issue is due to the program not properly restricting the ability to write to configuration files (e.g. my.cnf), combined with it loading a configuration file from specific locations that current versions do not use (e.g. /var/lib/mysql/my.cnf). This may allow an attacker to leverage specially crafted queries to use logging functionality to create new files or append custom content to existing files. By placing a custom .cnf file that MySQL will load, with a 'malloc_lib=' directive pointing to an attacker controlled 'mysql_hookandroot_lib.so' file, the attacker can cause MySQL to read the configuration file and load the malicious library the next time it starts. This can allow the attacker to gain root privileges. (CVE-2016-6662)

MariaDB is a community-developed fork of the MySQL relational database. The version of MariaDB installed on the remote host is 10.0.x prior to 10.0.27, and is therefore affected by multiple DoS vulnerabilities :

 - A flaw exists in the 'emb_stmt_execute()' function in 'libmysqld/lib_sql.cc' that is triggered during the handling of queries. This may allow an authenticated attacker to crash the database.
 - A NULL pointer dereference flaw exists in the 'innobase_need_rebuild()' function that is triggered during the handling of renamed columns. This may allow an authenticated attacker to crash the database.
 - A flaw exists in the 'ha_myisam::enable_indexes()' function in 'storage/myisam/ha_myisam.cc' that is triggered during the handling of ALTER TABLE statements. This may allow an authenticated attacker to crash the database.
 - An unspecified flaw exists in the 'check_log_path()' function in 'sql/sys_vars.cc' that may allow an authenticated attacker to have an unspecified impact related to the 'general_log_file'. No further details have been provided.
 - A flaw exists in the 'Item_sum_std::val_real()' function in 'sql/item_sum.cc' that is triggered during the handling of SUM statements. This may allow an authenticated attacker to crash the database.
 - A flaw exists in the 'my_double_round()' function in 'sql/item_func.cc' that is triggered during the handling of specially crafted queries. This may allow an authenticated attacker to crash the database.
 - A denial of service vulnerability exists in the 'st_select_lex_unit::cleanup()' function within file 'sql/sql_union.cc' when handling 'UNION' queries during 'JOIN' cleanup.  An authenticated, remote attacker can exploit this to crash the database.

MariaDB is a community-developed fork of the MySQL relational database. The version of MariaDB installed on the remote host is 10.1.x earlier than 10.1.17, and is therefore affected by multiple vulnerabilities :

 - A NULL pointer dereference flaw exists in the 'innobase_need_rebuild()' function that is triggered during the handling of renamed columns. This may allow an authenticated attacker to crash the database.
 - A flaw exists in the 'ha_myisam::enable_indexes()' function in 'storage/myisam/ha_myisam.cc' that is triggered during the handling of ALTER TABLE statements. This may allow an authenticated attacker to crash the database.
 - An unspecified flaw exists in the 'check_log_path()' function in 'sql/sys_vars.cc' that may allow an authenticated attacker to have an unspecified impact related to the 'general_log_file'. No further details have been provided.
 - A flaw exists in the 'Item_sum_std::val_real()' function in 'sql/item_sum.cc' that is triggered during the handling of SUM statements. This may allow an authenticated attacker to crash the database.
 - A flaw exists in 'sql/item_subselect.cc' that is triggered during the handling of specially crafted queries for non-existent functions.  This may allow an authenticated attacker to crash the database.
 - A flaw exists in the 'Item_subselect::is_expensive()' function in 'sql/item_subselect.cc' that is triggered during the handling of optimization procedures.  This may allow an authenticated attacker to crash the database.
 - A flaw exists in the 'st_select_lex_unit::cleanup()' function in 'sql/sql_union.cc' that is triggered during the handling of 'UNION' queries during 'JOIN' cleanup.  This may allow an authenticated attacker to crash the database.

ID	Name	Product	Family	Published	Updated	Severity
101415	Virtuozzo 6 : mysql / mysql-bench / mysql-devel / mysql-embedded / etc (VZLSA-2017-0184)	Nessus	Virtuozzo Local Security Checks	7/13/2017	1/4/2021	critical
258102	RHEL 6 / 7 : mysql55-mysql (RHSA-2016:2130)	Nessus	Red Hat Local Security Checks	8/29/2025	8/29/2025	critical
234406	RHEL 6 / 7 : rh-mysql56-mysql (RHSA-2016:2749)	Nessus	Red Hat Local Security Checks	4/15/2025	8/29/2025	critical
9749	Oracle MySQL 5.7.x < 5.7.16 Multiple Vulnerabilities	Nessus Network Monitor	Database	11/4/2016	3/6/2019	critical
9747	Oracle MySQL 5.5.x < 5.5.53 Multiple Vulnerabilities	Nessus Network Monitor	Database	11/4/2016	3/6/2019	critical
9655	MariaDB Server 5.5.x < 5.5.51 Multiple Vulnerabilities	Nessus Network Monitor	Database	10/7/2016	3/6/2019	high
9748	Oracle MySQL 5.6.x < 5.6.34 Multiple Vulnerabilities	Nessus Network Monitor	Database	11/4/2016	3/6/2019	critical
9544	MariaDB Server 10.0.x < 10.0.27 Multiple DoS	Nessus Network Monitor	Database	9/2/2016	3/6/2019	high
9546	MariaDB Server 10.1.x < 10.1.17 Multiple DoS	Nessus Network Monitor	Database	9/2/2016	3/6/2019	high

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