CVE-2019-5061 Denial of service in W1.f1
Attackers can cause denial of service in hostapd by forging authentication packets to trigger premature location updates, affecting wireless infrastructure stability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-5061?
CVE-2019-5061 is a high-severity denial of service vulnerability in W1.f1, published on 12 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An exploitable denial-of-service vulnerability exists in the hostapd 2.6, where an attacker could trigger AP to send IAPP location updates for stations, before the required authentication process has completed. This could lead to different denial of service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby Aps of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
Which versions are affected by CVE-2019-5061?
It affects 1 product.
Products include W1.fi Hostapd.
How do I fix CVE-2019-5061?
Apply the vendor's patch.
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-2019-5061 being exploited?
There is no known exploitation of CVE-2019-5061 in the wild and no public exploit code.
Other vulnerabilities in W1.f1
Sources
Also known as DEBIAN-CVE-2019-5061, GHSA-6626-64rf-2cvv, UBUNTU-CVE-2019-5061.