CVE-2023-3526 PHOENIX CONTACT: Cross-site Scripting vulnerability in TC ROUTER, TC CLOUD CLIENT and CLOUD CLIENT devices

Critical 9.6 Published Updated

Unauthenticated remote attackers can execute arbitrary code in the user's browser via reflective XSS in the license viewer page of PHOENIX CONTACT devices.

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-2023-3526?

CVE-2023-3526 is a critical cross-site scripting vulnerability in PHOENIX CONTACT CLOUD CLIENT 1101T-TX/TX, published on 8 Aug 2023. 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

In PHOENIX CONTACTs TC ROUTER and TC CLOUD CLIENT in versions prior to 2.07.2 as well as CLOUD CLIENT 1101T-TX/TX prior to 2.06.10 an unauthenticated remote attacker could use a reflective XSS within the license viewer page of the devices in order to execute code in the context of the user's browser.

Weakness: CWE-79

Which versions are affected by CVE-2023-3526?

It affects 7 products.

Products include Phoenixcontact Cloud Client 1101t-Tx Firmware, Phoenixcontact Tc Cloud Client 1002-4g Att Firmware, Phoenixcontact Tc Cloud Client 1002-4g Firmware, Phoenixcontact Tc Cloud Client 1002-4g Vzw Firmware, Phoenixcontact Tc Router 3002t-4g Att Firmware, Phoenixcontact Tc Router 3002t-4g Firmware and 1 more.

How do I fix CVE-2023-3526?

No fix has been published for CVE-2023-3526 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-2023-3526 being exploited?

There is no known exploitation of CVE-2023-3526 in the wild and no public exploit code.

Sources

Also known as GHSA-v33q-q39m-425m.

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