CVE-2017-16723 Cross-site scripting in PHOENIX CONTACT FL COMSERVER, FL COM SERVER, and PSI-MODEM/ETH
Cross-site scripting in PHOENIX CONTACT serial servers allows remote code execution, requiring firmware upgrades for industrial network security.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-16723?
CVE-2017-16723 is a medium-severity cross-site scripting vulnerability in PHOENIX CONTACT FL COMSERVER, FL COM SERVER, and PSI-MODEM/ETH, published on 11 Dec 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A Cross-site Scripting issue was discovered in PHOENIX CONTACT FL COMSERVER BASIC 232/422/485, FL COMSERVER UNI 232/422/485, FL COMSERVER BAS 232/422/485-T, FL COMSERVER UNI 232/422/485-T, FL COM SERVER RS232, FL COM SERVER RS485, and PSI-MODEM/ETH (running firmware versions prior to 1.99, 2.20, or 2.40). The cross-site scripting vulnerability has been identified, which may allow remote code execution.
Weakness: CWE-79
Which versions are affected by CVE-2017-16723?
It affects 13 products.
Products include Phoenixcontact Fl Com Server Rs232 Firmware, Phoenixcontact Fl Com Server Rs485 Firmware, Phoenixcontact Fl Comserver Bas 232 Firmware, Phoenixcontact Fl Comserver Bas 422 Firmware, Phoenixcontact Fl Comserver Bas 485-T Firmware, Phoenixcontact Fl Comserver Basic 232 Firmware and 7 more.
How do I fix CVE-2017-16723?
No fix has been published for CVE-2017-16723 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2017-16723 being exploited?
There is no known exploitation of CVE-2017-16723 in the wild and no public exploit code.
Sources
Also known as GHSA-2m88-g87r-c599.