SB2023063015 - Multiple vulnerabilities in Ovarro TBox RTUs

Description

This security bulletin contains information about 6 vulnerabilities.

1) Missing Authorization (CVE-ID: CVE-2023-36607)

CWE-ID: CWE-862 - Missing Authorization

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

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to missing authorization for some API commands. A remote attacker can gain access to sensitive information on the target system.

2) Inclusion of Functionality from Untrusted Control Sphere (CVE-ID: CVE-2023-36609)

CWE-ID: CWE-829 - Inclusion of Functionality from Untrusted Control Sphere

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

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to inclusion of functionality from untrusted control sphere. A remote administrator can set up a local OpenVPN server and push a malicious script onto the TBox host to acquire root privileges.

3) Insufficient Entropy (CVE-ID: CVE-2023-36610)

CWE-ID: CWE-331 - Insufficient Entropy

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/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 the affected TBox RTUs generate software security tokens using insufficient entropy. A remote attacker can brute-force the token and authenticate themselves.

4) Improper Authorization (CVE-ID: CVE-2023-36611)

CWE-ID: CWE-285 - Improper Authorization

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

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to improper authorization. A remote user can establish an SSH session and and access files requiring higher privileges.

5) Use of a broken or risky cryptographic algorithm (CVE-ID: CVE-2023-36608)

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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 the affected TBox RTUs store hashed passwords using MD5 encryption. A remote user can gain access to sensitive information on the system.

6) Unprotected storage of credentials (CVE-ID: CVE-2023-3395)

CWE-ID: CWE-256 - Unprotected Storage of Credentials

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

The vulnerability allows a local user to gain access to other users' credentials.

The vulnerability exists due to application stored credentials in plain text in the TWinSoft Configuration Tool. A remote user can obtain the plaintext password.

Remediation

Install update from vendor's website.

References

• https://www.cisa.gov/news-events/ics-advisories/icsa-23-180-03