CVE-2017-7935 Denial of service in Phoenix Contact GmbH mGuard
Attackers can cause denial of service on Phoenix Contact mGuard devices by exhausting resources through multiple initial VPN requests.
- 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-2017-7935?
CVE-2017-7935 is a high-severity denial of service 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
A Resource Exhaustion issue was discovered in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2. An attacker may compromise the device's availability by performing multiple initial VPN requests.
Weakness: CWE-400
Which versions are affected by CVE-2017-7935?
It affects 1 product.
Products include Phoenix Contact Gmbh Mguard Firmware.
How do I fix CVE-2017-7935?
No fix has been published for CVE-2017-7935 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-7935 being exploited?
There is no known exploitation of CVE-2017-7935 in the wild and no public exploit code.
Other vulnerabilities in Phoenix Contact GmbH mGuard
Sources
Also known as GHSA-xqr3-vfxg-3qjr.