CVE-2023-4495 Easy Chat Server XSS vulnerability
Stored XSS in Easy Chat Server allows attackers to inject scripts via the Resume parameter, potentially leading to session hijacking or malicious actions.
- 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-2023-4495?
CVE-2023-4495 is a medium-severity cross-site scripting vulnerability in EFS Software Easy Chat Server, published on 4 Oct 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
Easy Chat Server, in its 3.1 version and before, does not sufficiently encrypt user-controlled inputs, resulting in a Cross-Site Scripting (XSS) vulnerability stored via /registresult.htm (POST method), in the Resume parameter. The XSS is loaded from /register.ghp.
Weakness: CWE-79
Which versions are affected by CVE-2023-4495?
It affects 1 product.
Products include Easy Chat Server Project Easy Chat Server.
How do I fix CVE-2023-4495?
No fix has been published for CVE-2023-4495 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-2023-4495 being exploited?
There is no known exploitation of CVE-2023-4495 in the wild and no public exploit code.
Other vulnerabilities in EFS Software Easy Chat Server
Sources
Also known as GHSA-2hpg-33j4-xvq2.