Denial of service in Schneider Electric Modicon Controllers
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-6857 |
| CWE-ID | N/A |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Modicon M580 Hardware solutions / Firmware Modicon M340 Hardware solutions / Firmware Modicon Premium Hardware solutions / Firmware Modicon Quantum Hardware solutions / Firmware |
| Vendor | Schneider Electric |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Improper Check for Unusual or Exceptional Conditions
EUVDB-ID: #VU24372
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-6857
CWE-ID: N/A
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper check for unusual or exceptional conditions. A remote attacker can cause a denial of service condition in the controller when reading specific memory blocks using Modbus TCP.
MitigationInstall updates from vendor's website.
Vulnerable software versionsModicon M580: 1.04 - 2.50
Modicon M340: All versions
Modicon Premium: All versions
Modicon Quantum: All versions
CPE2.3- cpe:2.3:h:schneider_electric:modicon_m580:1.04:*:*:*:*:*:*:*
- cpe:2.3:h:schneider_electric:modicon_m580:1.13:*:*:*:*:*:*:*
- cpe:2.3:h:schneider_electric:modicon_m580:2.01:*:*:*:*:*:*:*
- cpe:2.3:h:schneider_electric:modicon_m340:*:*:*:*:*:*:*:*
- cpe:2.3:h:schneider_electric:modicon_premium:*:*:*:*:*:*:*:*
- cpe:2.3:h:schneider_electric:modicon_quantum:*:*:*:*:*:*:*:*
https://www.se.com/ww/en/download/document/SEVD-2019-344-01
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.
