Uncontrolled resource consumption vulnerability in Mitsubishi Electoric FA Engineering Software (CPU Module Logging Configuration Tool Ver. 1.94Y and earlier, CW Configurator Ver. 1.010L and earlier, EM Software Development Kit (EM Configurator) Ver. 1.010L and earlier, GT Designer3 (GOT2000) Ver. 1.221F and earlier, GX LogViewer Ver. 1.96A and earlier, GX Works2 Ver. 1.586L and earlier, GX Works3 Ver. 1.058L and earlier, M_CommDTM-HART Ver. 1.00A, M_CommDTM-IO-Link Ver. 1.02C and earlier, MELFA-Works Ver. 4.3 and earlier, MELSEC-L Flexible High-Speed I/O Control Module Configuration Tool Ver.1.004E and earlier, MELSOFT FieldDeviceConfigurator Ver. 1.03D and earlier, MELSOFT iQ AppPortal Ver. 1.11M and earlier, MELSOFT Navigator Ver. 2.58L and earlier, MI Configurator Ver. 1.003D and earlier, Motion Control Setting Ver. 1.005F and earlier, MR Configurator2 Ver. 1.72A and earlier, MT Works2 Ver. 1.156N and earlier, RT ToolBox2 Ver. 3.72A and earlier, and RT ToolBox3 Ver. 1.50C and earlier) allows an attacker to cause a denial of service (DoS) condition attacks via unspecified vectors.
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Cpu_module_logging_configuration_tool | Mitsubishielectric | * | 1.94y (including) |
| Cw_configurator | Mitsubishielectric | * | 1.010l (including) |
| Em_configurator | Mitsubishielectric | * | 1.010l (including) |
| Gt_designer3 | Mitsubishielectric | * | 1.221f (including) |
| Gx_logviewer | Mitsubishielectric | * | 1.100e (including) |
| Gx_works2 | Mitsubishielectric | * | 1.590q (including) |
| Gx_works3 | Mitsubishielectric | * | 1.060n (including) |
| M_commdtm-hart | Mitsubishielectric | * | 1.01b (including) |
| M_commdtm-io-link | Mitsubishielectric | * | 1.03d (including) |
| Melfa-works | Mitsubishielectric | * | 4.4 (including) |
| Melsec-l_flexible_high-speed_i/o_control_module_configuration_tool | Mitsubishielectric | * | 1.005f (including) |
| Melsoft_fielddeviceconfigurator | Mitsubishielectric | * | 1.04e (including) |
| Melsoft_iq_appportal | Mitsubishielectric | * | 1.14q (including) |
| Melsoft_navigator | Mitsubishielectric | * | 2.62q (including) |
| Mi_configurator | Mitsubishielectric | * | 1.004e (including) |
| Motion_control_setting | Mitsubishielectric | * | 1.006g (including) |
| Mr_configurator2 | Mitsubishielectric | * | 1.100e (including) |
| Mt_works2 | Mitsubishielectric | * | 1.160s (including) |
| Rt_toolbox2 | Mitsubishielectric | * | 3.73b (including) |
| Rt_toolbox3 | Mitsubishielectric | * | 1.60n (including) |
Limited resources include memory, file system storage, database connection pool entries, and CPU. If an attacker can trigger the allocation of these limited resources, but the number or size of the resources is not controlled, then the attacker could cause a denial of service that consumes all available resources. This would prevent valid users from accessing the product, and it could potentially have an impact on the surrounding environment. For example, a memory exhaustion attack against an application could slow down the application as well as its host operating system. There are at least three distinct scenarios which can commonly lead to resource exhaustion:
Resource exhaustion problems are often result due to an incorrect implementation of the following situations:
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.