SB2024082104 - Multiple vulnerabilities in Phoenix Contact CHARX controllers

Description

This security bulletin contains information about 2 vulnerabilities.

1) Files or Directories Accessible to External Parties (CVE-ID: CVE-2024-3913)

CWE-ID: CWE-552 - Files or Directories Accessible to External Parties

CVSSv4: 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

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a file writeable for short time after system startup within the firewall. A remote attacker can change the device configuration.

2) Insecure Default Initialization of Resource (CVE-ID: CVE-2024-6788)

CWE-ID: CWE-1188 - Insecure Default Initialization of Resource

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

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insecure default initialization of resource. A remote attacker can use the firmware update feature on the LAN interface of the device to reset the password.

Remediation

Install update from vendor's website.

References

• https://cert.vde.com/en/advisories/VDE-2024-022
• https://www.zerodayinitiative.com/advisories/ZDI-24-1152/