| Summary | An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock. |
|---|---|
| Publication Date | Feb. 14, 2017, 6:59 a.m. |
| Registration Date | Jan. 26, 2021, 2:18 p.m. |
| Last Update | Nov. 21, 2024, 11:59 a.m. |
| CVSS3.1 : HIGH | |
| スコア | 8.6 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更あり |
| 機密性への影響(C) | なし |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | 高 |
| CVSS2.0 : MEDIUM | |
| Score | 5.0 |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃前の認証要否(Au) | 不要 |
| 機密性への影響(C) | なし |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | 低 |
| Get all privileges. | いいえ |
| Get user privileges | いいえ |
| Get other privileges | いいえ |
| User operation required | いいえ |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:mitsubishielectric:qj71e71-100_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:mitsubishielectric:qj71e71-100:-:*:*:*:*:*:*:* | ||||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:mitsubishielectric:qj71e71-b5_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:mitsubishielectric:qj71e71-b5:-:*:*:*:*:*:*:* | ||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:mitsubishielectric:qj71e71-b2_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:mitsubishielectric:qj71e71-b2:-:*:*:*:*:*:*:* | ||||