Vulnerability identifier: #VU21521
Vulnerability risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L/E:U/RL:U/RC:C]
CVE-ID:
CWE-ID:
CWE-287
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
BMXNOR0200H Ethernet / Serial RTU module
Hardware solutions /
Firmware
Modicon Premium
Hardware solutions /
Firmware
Modicon Quantum
Hardware solutions /
Firmware
Modicon M340
Hardware solutions /
Firmware
Vendor: Schneider Electric
Description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in CGI functions. A remote attacker can send a specially crafted request to CGI functions, bypass authentication process and gain unauthorized access to the application.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
BMXNOR0200H Ethernet / Serial RTU module: All versions
Modicon Premium: All versions
Modicon Quantum: All versions
Modicon M340: All versions
External links
http://www.schneider-electric.com/en/download/document/SEVD-2018-081-02/
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.