sql

Documentation

Index

• Variables

Variables

var CheckEnableBackup = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0024",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "enable-backup",
		Summary:     "Enable automated backups to recover from data-loss",
		Impact:      "No recovery of lost or corrupted data",
		Resolution:  "Enable automated backups",
		Explanation: `Automated backups are not enabled by default. Backups are an easy way to restore data in a corruption or data-loss scenario.`,
		Links: []string{
			"https://cloud.google.com/sql/docs/mysql/backup-recovery/backups",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.Settings.Backups.Enabled.IsFalse() {
				results.Add(
					"Database instance does not have backups enabled.",
					instance.Settings.Backups.Enabled,
				)
			}
		}
		return
	},
)

var CheckEnablePgTempFileLogging = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0014",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "enable-pg-temp-file-logging",
		Summary:     "Temporary file logging should be enabled for all temporary files.",
		Impact:      "Use of temporary files will not be logged",
		Resolution:  "Enable temporary file logging for all files",
		Explanation: `Temporary files are not logged by default. To log all temporary files, a value of ` + "`" + `0` + "`" + ` should set in the ` + "`" + `log_temp_files` + "`" + ` flag - as all files greater in size than the number of bytes set in this flag will be logged.`,
		Links: []string{
			"https://postgresqlco.nf/doc/en/param/log_temp_files/",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyPostgres {
				continue
			}
			if instance.Settings.Flags.LogTempFileSize.LessThan(0) {
				results.Add(
					"Database instance has temporary file logging disabled.",
					instance.Settings.Flags.LogTempFileSize,
				)
			} else if instance.Settings.Flags.LogTempFileSize.GreaterThan(0) {
				results.Add(
					"Database instance has temporary file logging disabled for files of certain sizes.",
					instance.Settings.Flags.LogTempFileSize,
				)
			}
		}
		return
	},
)

var CheckEncryptInTransitData = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0015",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "encrypt-in-transit-data",
		Summary:     "SSL connections to a SQL database instance should be enforced.",
		Impact:      "Intercepted data can be read in transit",
		Resolution:  "Enforce SSL for all connections",
		Explanation: `In-transit data should be encrypted so that if traffic is intercepted data will not be exposed in plaintext to attackers.`,
		Links: []string{
			"https://cloud.google.com/sql/docs/mysql/configure-ssl-instance",
		},
		Severity: severity.High,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.Settings.IPConfiguration.RequireTLS.IsFalse() {
				results.Add(
					"Database instance does not require TLS for all connections.",
					instance.Settings.IPConfiguration.RequireTLS,
				)
			}
		}
		return
	},
)

var CheckMysqlNoLocalInfile = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0026",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "mysql-no-local-infile",
		Summary:     "Disable local_infile setting in MySQL",
		Impact:      "Arbitrary files read by attackers when combined with a SQL injection vulnerability.",
		Resolution:  "Disable the local infile setting",
		Explanation: `Arbitrary files can be read from the system using LOAD_DATA unless this setting is disabled.`,
		Links: []string{
			"https://dev.mysql.com/doc/refman/8.0/en/load-data-local-security.html",
		},
		Severity: severity.High,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyMySQL {
				continue
			}
			if instance.Settings.Flags.LocalInFile.IsTrue() {
				results.Add(
					"Database instance has local file read access enabled.",
					instance.Settings.Flags.LocalInFile,
				)
			}
		}
		return
	},
)

var CheckNoContainedDbAuth = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0023",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "no-contained-db-auth",
		Summary:     "Contained database authentication should be disabled",
		Impact:      "Access can be granted without knowledge of the database administrator",
		Resolution:  "Disable contained database authentication",
		Explanation: `Users with ALTER permissions on users can grant access to a contained database without the knowledge of an administrator`,
		Links: []string{
			"https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/contained-database-authentication-server-configuration-option?view=sql-server-ver15",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilySQLServer {
				continue
			}
			if instance.Settings.Flags.ContainedDatabaseAuthentication.IsTrue() {
				results.Add(
					"Database instance has contained database authentication enabled.",
					instance.Settings.Flags.ContainedDatabaseAuthentication,
				)
			}
		}
		return
	},
)

var CheckNoCrossDbOwnershipChaining = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0019",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "no-cross-db-ownership-chaining",
		Summary:     "Cross-database ownership chaining should be disabled",
		Impact:      "Unintended access to sensitive data",
		Resolution:  "Disable cross database ownership chaining",
		Explanation: `Cross-database ownership chaining, also known as cross-database chaining, is a security feature of SQL Server that allows users of databases access to other databases besides the one they are currently using.`,
		Links: []string{
			"https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/cross-db-ownership-chaining-server-configuration-option?view=sql-server-ver15",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilySQLServer {
				continue
			}
			if instance.Settings.Flags.CrossDBOwnershipChaining.IsTrue() {
				results.Add(
					"Database instance has cross database ownership chaining enabled.",
					instance.Settings.Flags.CrossDBOwnershipChaining,
				)
			}
		}
		return
	},
)

var CheckNoPublicAccess = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0017",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "no-public-access",
		Summary:     "Ensure that Cloud SQL Database Instances are not publicly exposed",
		Impact:      "Public exposure of sensitive data",
		Resolution:  "Remove public access from database instances",
		Explanation: `Database instances should be configured so that they are not available over the public internet, but to internal compute resources which access them.`,
		Links: []string{
			"https://www.cloudconformity.com/knowledge-base/gcp/CloudSQL/publicly-accessible-cloud-sql-instances.html",
		},
		Severity: severity.High,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.Settings.IPConfiguration.EnableIPv4.IsTrue() {
				results.Add(
					"Database instance is granted a public internet address.",
					instance.Settings.IPConfiguration.EnableIPv4,
				)
			}
			for _, network := range instance.Settings.IPConfiguration.AuthorizedNetworks {
				if cidr.IsPublic(network.CIDR.Value()) {
					results.Add(
						"Database instance allows access from the public internet.",
						network.CIDR,
					)
				}
			}
		}
		return
	},
)

var CheckPgLogCheckpoints = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0025",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "pg-log-checkpoints",
		Summary:     "Ensure that logging of checkpoints is enabled.",
		Impact:      "Insufficient diagnostic data.",
		Resolution:  "Enable checkpoints logging.",
		Explanation: `Logging checkpoints provides useful diagnostic data, which can identify performance issues in an application and potential DoS vectors.`,
		Links: []string{
			"https://www.postgresql.org/docs/13/runtime-config-logging.html#GUC-LOG-CHECKPOINTS",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyPostgres {
				continue
			}
			if instance.Settings.Flags.LogCheckpoints.IsFalse() {
				results.Add(
					"Database instance is not configured to log checkpoints.",
					instance.Settings.Flags.LogCheckpoints,
				)
			}
		}
		return
	},
)

var CheckPgLogConnections = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0016",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "pg-log-connections",
		Summary:     "Ensure that logging of connections is enabled.",
		Impact:      "Insufficient diagnostic data.",
		Resolution:  "Enable connection logging.",
		Explanation: `Logging connections provides useful diagnostic data such as session length, which can identify performance issues in an application and potential DoS vectors.`,
		Links: []string{
			"https://www.postgresql.org/docs/13/runtime-config-logging.html#GUC-LOG-CONNECTIONS",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyPostgres {
				continue
			}
			if instance.Settings.Flags.LogConnections.IsFalse() {
				results.Add(
					"Database instance is not configured to log connections.",
					instance.Settings.Flags.LogConnections,
				)
			}
		}
		return
	},
)

var CheckPgLogDisconnections = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0022",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "pg-log-disconnections",
		Summary:     "Ensure that logging of disconnections is enabled.",
		Impact:      "Insufficient diagnostic data.",
		Resolution:  "Enable disconnection logging.",
		Explanation: `Logging disconnections provides useful diagnostic data such as session length, which can identify performance issues in an application and potential DoS vectors.`,
		Links: []string{
			"https://www.postgresql.org/docs/13/runtime-config-logging.html#GUC-LOG-DISCONNECTIONS",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyPostgres {
				continue
			}
			if instance.Settings.Flags.LogDisconnections.IsFalse() {
				results.Add(
					"Database instance is not configured to log disconnections.",
					instance.Settings.Flags.LogDisconnections,
				)
			}
		}
		return
	},
)

var CheckPgLogErrors = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0018",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "pg-log-errors",
		Summary:     "Ensure that Postgres errors are logged",
		Impact:      "Loss of error logging",
		Resolution:  "Set the minimum log severity to at least ERROR",
		Explanation: `Setting the minimum log severity too high will cause errors not to be logged`,
		Links: []string{
			"https://postgresqlco.nf/doc/en/param/log_min_messages/",
			"https://www.postgresql.org/docs/13/runtime-config-logging.html#GUC-LOG-MIN-MESSAGES",
		},
		Severity: severity.Low,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyPostgres {
				continue
			}
			if instance.Settings.Flags.LogMinMessages.IsOneOf("FATAL", "PANIC", "LOG") {
				results.Add(
					"Database instance is not configured to log errors.",
					instance.Settings.Flags.LogMinMessages,
				)
			}
		}
		return
	},
)

var CheckPgLogLockWaits = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0020",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "pg-log-lock-waits",
		Summary:     "Ensure that logging of lock waits is enabled.",
		Impact:      "Issues leading to denial of service may not be identified.",
		Resolution:  "Enable lock wait logging.",
		Explanation: `Lock waits are often an indication of poor performance and often an indicator of a potential denial of service vulnerability, therefore occurrences should be logged for analysis.`,
		Links: []string{
			"https://www.postgresql.org/docs/13/runtime-config-logging.html#GUC-LOG-LOCK-WAITS",
		},
		Severity: severity.Medium,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyPostgres {
				continue
			}
			if instance.Settings.Flags.LogLockWaits.IsFalse() {
				results.Add(
					"Database instance is not configured to log lock waits.",
					instance.Settings.Flags.LogLockWaits,
				)
			}
		}
		return
	},
)

var CheckPgNoMinStatementLogging = rules.Register(
	rules.Rule{
		AVDID:       "AVD-GCP-0021",
		Provider:    provider.GoogleProvider,
		Service:     "sql",
		ShortCode:   "pg-no-min-statement-logging",
		Summary:     "Ensure that logging of long statements is disabled.",
		Impact:      "Sensitive data could be exposed in the database logs.",
		Resolution:  "Disable minimum duration statement logging completely",
		Explanation: `Logging of statements which could contain sensitive data is not advised, therefore this setting should preclude all statements from being logged.`,
		Links: []string{
			"https://www.postgresql.org/docs/13/runtime-config-logging.html#GUC-LOG-MIN-DURATION-STATEMENT",
		},
		Severity: severity.Low,
	},
	func(s *state.State) (results rules.Results) {
		for _, instance := range s.Google.SQL.Instances {
			if instance.DatabaseFamily() != sql.DatabaseFamilyPostgres {
				continue
			}
			if instance.Settings.Flags.LogMinDurationStatement.NotEqualTo(-1) {
				results.Add(
					"Database instance is configured to log statements.",
					instance.Settings.Flags.LogMinDurationStatement,
				)
			}
		}
		return
	},
)