CVE-2017-7937 Auth bypass in Phoenix Contact GmbH mGuard
Attackers can bypass authentication on Phoenix Contact mGuard firewalls when RADIUS servers are unreachable, gaining unauthorized access.
- 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-2017-7937?
CVE-2017-7937 is a medium-severity authentication bypass vulnerability in Phoenix Contact GmbH mGuard, published on 19 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Improper Authentication issue was discovered in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2. An attacker may be able to gain unauthorized access to the user firewall when RADIUS servers are unreachable.
Weakness: CWE-287
Which versions are affected by CVE-2017-7937?
It affects 1 product.
Products include Phoenix Contact Gmbh Mguard Firmware.
How do I fix CVE-2017-7937?
No fix has been published for CVE-2017-7937 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-2017-7937 being exploited?
There is no known exploitation of CVE-2017-7937 in the wild and no public exploit code.
Other vulnerabilities in Phoenix Contact GmbH mGuard
Sources
Also known as GHSA-93xj-xqmv-6cxx.