CVE-2018-0381 Cisco Aironet 1560, 1800, 2800, and 3800 Series Access Points Denial of Service Vulnerability
An authenticated adjacent attacker can cause a denial of service on Cisco Aironet Access Points by triggering a deadlock condition via specific traffic patterns.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-0381?
CVE-2018-0381 is a medium-severity denial of service vulnerability in Cisco Aironet Access Points, published on 17 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the Cisco Aironet Series Access Points (APs) software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a deadlock condition that may occur when an affected AP attempts to dequeue aggregated traffic that is destined to an attacker-controlled wireless client. An attacker who can successfully transition between multiple Service Set Identifiers (SSIDs) hosted on the same AP while replicating the required traffic patterns could trigger the deadlock condition. A watchdog timer that detects the condition will trigger a reload of the device, resulting in a DoS condition while the device restarts.
Which versions are affected by CVE-2018-0381?
It affects 1 product.
Products include Cisco Aironet Access Points.
How do I fix CVE-2018-0381?
No fix has been published for CVE-2018-0381 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-2018-0381 being exploited?
There is no known exploitation of CVE-2018-0381 in the wild and no public exploit code.
Sources
Also known as GHSA-f5q5-9x4v-vx22.