#VU25342 Improper Check for Unusual or Exceptional Conditions in Schneider Electric products - CVE-2019-6833

Vulnerability identifier: #VU25342

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2019-6833

CWE-ID: CWE-754

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Magelis HMIGTO
Magelis HMISTO
Magelis XBTGH
Magelis HMIGTU
Magelis HMIGTUX
Magelis HMISCU
Magelis HMISTU
Magelis XBTGT
Magelis XBTGC
Magelis HMIGXO
Magelis HMIGXU

Software vendor:
Schneider Electric

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the HMI may temporarily freeze when the device receives a high rate of frames. When the attack stops, the buffered commands are processed by the HMI. A remote attacker can cause a denial of service condition on the target system.

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

• https://security.cse.iitk.ac.in/responsible-disclosure
• https://www.schneider-electric.com/ww/en/download/document/SEVD-2019-225-01