CVE-2022-42786 Wiesemann & Theis: XSS vulnerability in web interface of the Com-Server family
An authenticated attacker can inject malicious scripts into the configuration webpage title, potentially executing arbitrary code in the victim's browser.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-42786?
CVE-2022-42786 is a medium-severity cross-site scripting vulnerability in Wiesemann & Theis AT-Modem-Emulator, published on 10 Nov 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Multiple W&T Products of the ComServer Series are prone to an XSS attack. An authenticated remote Attacker can execute arbitrary web scripts or HTML via a crafted payload injected into the title of the configuration webpage
Weakness: CWE-79
Which versions are affected by CVE-2022-42786?
It affects 17 products.
Products include Wut At-Modem-Emulator Firmware, Wut Com-Server 20ma Firmware, Wut Com-Server \+\+ Firmware, Wut Com-Server Highspeed 100basefx Firmware, Wut Com-Server Highspeed 100baselx Firmware, Wut Com-Server Highspeed 19\" 1port Firmware and 11 more.
How do I fix CVE-2022-42786?
No fix has been published for CVE-2022-42786 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-2022-42786 being exploited?
There is no known exploitation of CVE-2022-42786 in the wild and no public exploit code.
Other vulnerabilities in Wiesemann & Theis AT-Modem-Emulator
Sources
Also known as GHSA-ffmc-cj3h-9wwj.