STIGQter STIGQter: STIG Summary: Oracle MySQL 8.0 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 28 Jan 2021:

The MySQL Database Server 8.0 must generate audit records when unsuccessful attempts to access security objects occur.

DISA Rule

SV-235108r638812_rule

Vulnerability Number

V-235108

Group Title

SRG-APP-000492-DB-000333

Rule Version

MYS8-00-002100

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

If currently required, configure the MySQL Database Server to produce audit records when unsuccessful attempts to retrieve privileges/permissions occur.

See the supplemental file "MySQL80Audit.sql".

Check Contents

Review the system documentation to determine if MySQL Server is required to audit when unsuccessful attempts to access security objects occur.

Check if MySQL audit is configured and enabled. The my.cnf file will set the variable audit_file.

To further check, execute the following query:
SELECT PLUGIN_NAME, PLUGIN_STATUS
FROM INFORMATION_SCHEMA.PLUGINS
WHERE PLUGIN_NAME LIKE 'audit%';

The status of the audit_log plugin must be "active". If it is not "active", this is a finding.

Review audit filters and associated users by running the following queries:
SELECT `audit_log_filter`.`NAME`,
`audit_log_filter`.`FILTER`
FROM `mysql`.`audit_log_filter`;

SELECT `audit_log_user`.`USER`,
`audit_log_user`.`HOST`,
`audit_log_user`.`FILTERNAME`
FROM `mysql`.`audit_log_user`;

All currently defined audits for the MySQL server instance will be listed. If no audits are returned, this is a finding.

To check if the audit filters in place are generating records when unsuccessful attempts to access security objects occur, run the following query with a user that does not have privileges so that it will fail:
select * from mysql.proxies_priv;
ERROR: 1142: SELECT command denied to user 'auditme'@'localhost' for table 'proxies_priv'

Review the audit log by running the command:
sudo cat <directory where audit log files are located>/audit.log|egrep proxies_priv
For example if the values returned by - "select @@datadir, @@audit_log_file; " are /usr/local/mysql/data/, audit.log
sudo cat /usr/local/mysql/data/audit.log |egrep proxies_priv
For example if the values returned by - "select @@datadir, @@audit_log_file; " are /usr/local/mysql/data/, audit.log
sudo cat /usr/local/mysql/data/audit.log |egrep proxies_priv

The audit data will look similar to the example below:
{ "timestamp": "2020-08-19 21:10:39", "id": 1, "class": "general", "event": "status", "connection_id": 13, "account": { "user": "auditme", "host": "localhost" }, "login": { "user": "auditme", "os": "", "ip": "::1", "proxy": "" }, "general_data": { "command": "Query", "sql_command": "select", "query": "select * from mysql.proxies_priv", "status": 1142 } },
Note status is 1142, like the error.

If the audit event is not present, this is a finding.

Vulnerability Number

V-235108

Documentable

False

Rule Version

MYS8-00-002100

Severity Override Guidance

Review the system documentation to determine if MySQL Server is required to audit when unsuccessful attempts to access security objects occur.

Check if MySQL audit is configured and enabled. The my.cnf file will set the variable audit_file.

To further check, execute the following query:
SELECT PLUGIN_NAME, PLUGIN_STATUS
FROM INFORMATION_SCHEMA.PLUGINS
WHERE PLUGIN_NAME LIKE 'audit%';

The status of the audit_log plugin must be "active". If it is not "active", this is a finding.

Review audit filters and associated users by running the following queries:
SELECT `audit_log_filter`.`NAME`,
`audit_log_filter`.`FILTER`
FROM `mysql`.`audit_log_filter`;

SELECT `audit_log_user`.`USER`,
`audit_log_user`.`HOST`,
`audit_log_user`.`FILTERNAME`
FROM `mysql`.`audit_log_user`;

All currently defined audits for the MySQL server instance will be listed. If no audits are returned, this is a finding.

To check if the audit filters in place are generating records when unsuccessful attempts to access security objects occur, run the following query with a user that does not have privileges so that it will fail:
select * from mysql.proxies_priv;
ERROR: 1142: SELECT command denied to user 'auditme'@'localhost' for table 'proxies_priv'

Review the audit log by running the command:
sudo cat <directory where audit log files are located>/audit.log|egrep proxies_priv
For example if the values returned by - "select @@datadir, @@audit_log_file; " are /usr/local/mysql/data/, audit.log
sudo cat /usr/local/mysql/data/audit.log |egrep proxies_priv
For example if the values returned by - "select @@datadir, @@audit_log_file; " are /usr/local/mysql/data/, audit.log
sudo cat /usr/local/mysql/data/audit.log |egrep proxies_priv

The audit data will look similar to the example below:
{ "timestamp": "2020-08-19 21:10:39", "id": 1, "class": "general", "event": "status", "connection_id": 13, "account": { "user": "auditme", "host": "localhost" }, "login": { "user": "auditme", "os": "", "ip": "::1", "proxy": "" }, "general_data": { "command": "Query", "sql_command": "select", "query": "select * from mysql.proxies_priv", "status": 1142 } },
Note status is 1142, like the error.

If the audit event is not present, this is a finding.

Check Content Reference

M

Target Key

5277

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