Multiple vulnerabilities in Schneider Electric Modicon M221
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2018-7789 CVE-2018-7790 CVE-2018-7791 CVE-2018-7792 |
| CWE-ID | CWE-703 CWE-199 CWE-264 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Modicon M221 Hardware solutions / Firmware |
| Vendor | Schneider Electric |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Improper check for unusual or exceptional conditions
EUVDB-ID: #VU14552
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-7789
CWE-ID:
CWE-703 - Improper Check or Handling of Exceptional Conditions
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to improper check for unusual or exceptional conditions. A remote attacker can send use specially crafted programming protocol frames and reboot Modicon M221.
MitigationUpdate to version 1.6.2.0.
Vulnerable software versionsModicon M221: before 1.6.2.0
External linkshttp://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD...
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Information management error
EUVDB-ID: #VU14553
Risk: Low
CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-7790
CWE-ID:
CWE-199 - Information Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to information management error. A remote attacker can connect to a Modicon M221, upload the original program from the PLC and replay authentication sequences.
MitigationUpdate to version 1.6.2.0.
Vulnerable software versionsModicon M221: before 1.6.2.0
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Security restrictions bypass
EUVDB-ID: #VU14554
Risk: Low
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-7791
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to improper privileges and access controls. A remote attacker can overwrite the password and upload the original program from the PLC.
MitigationUpdate to version 1.6.2.0.
Vulnerable software versionsModicon M221: before 1.6.2.0
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Security restrictions bypass
EUVDB-ID: #VU14555
Risk: Low
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-7792
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to improper privileges and access controls. A remote attacker can use a rainbow table and decode the password.
MitigationUpdate to version 1.6.2.0.
Vulnerable software versionsModicon M221: before 1.6.2.0
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
