CVE-2023-43742 Auth bypass in n/a
Unauthenticated attackers can gain administrative access by ignoring login failure messages, allowing full control of the Zultys MX PBX system.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-43742?
CVE-2023-43742 is a critical authentication bypass vulnerability in n/a, published on 8 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An authentication bypass in Zultys MX-SE, MX-SE II, MX-E, MX-Virtual, MX250, and MX30 with firmware versions prior to 17.0.10 patch 17161 and 16.04 patch 16109 allows an unauthenticated attacker to obtain an administrative session via a protection mechanism failure in the authentication function. In normal operation, the Zultys MX Administrator Windows client connects to port 7505 and attempts authentication, submitting the administrator username and password to the server. Upon authentication failure, the server sends a login failure message prompting the client to disconnect. However, if the client ignores the failure message instead and attempts to continue, the server does not forcibly close the connection and processes all subsequent requests from the client as if authentication had been successful.
Weakness: CWE-287
Which versions are affected by CVE-2023-43742?
It affects 6 products.
Products include Zultys Mx-E Firmware, Zultys Mx-Se Firmware, Zultys Mx-Se Ii Firmware, Zultys Mx-Virtual Firmware, Zultys Mx250 Firmware, Zultys Mx30 Firmware.
How do I fix CVE-2023-43742?
No fix has been published for CVE-2023-43742 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-43742 being exploited?
There is no known exploitation of CVE-2023-43742 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-fvq3-8fqq-2cvh.