CVE-2023-36609 — The affected TBox RTUs run OpenVPN with root privileges and can run user defined

The affected TBox RTUs run OpenVPN with root privileges and can run user defined configuration scripts. An attacker could set up a local OpenVPN server and push a malicious script onto the TBox host to acquire root privileges.

01What is this vulnerability?

The affected TBox RTUs run OpenVPN with root privileges and can run user defined configuration scripts. An attacker could set up a local OpenVPN server and push a malicious script onto the TBox host to acquire root privileges.

02Affected products

Vendor	Product	Versions
Ovarro	TBox MS	CPU32 — 0
Ovarro	​TBox MS	CPU32-S2 — 0
Ovarro	TBox LT2	0
Ovarro	TBox TG2	0
Ovarro	TBox RM2	0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-07-03T19:59:08.547Z
• Last modified: 2024-11-25T18:11:48.466Z

09References

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