CVE-2019-15276 Cisco Wireless LAN Controller HTTP Parsing Engine Denial of Service Vulnerability
A remote attacker can cause a denial of service on Cisco Wireless LAN Controllers by submitting crafted URLs to the web interface.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-15276?
CVE-2019-15276 is a high-severity denial of service vulnerability in Cisco Wireless Lan Controller Software, published on 26 Nov 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in the web interface of Cisco Wireless LAN Controller Software could allow a low-privileged, authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists due to a failure of the HTTP parsing engine to handle specially crafted URLs. An attacker could exploit this vulnerability by authenticating with low privileges to an affected controller and submitting the crafted URL to the web interface of the affected device. Conversely, an unauthenticated attacker could exploit this vulnerability by persuading a user of the web interface to click the crafted URL. A successful exploit could allow the attacker to cause an unexpected restart of the device, resulting in a DoS condition.
Weakness: CWE-20
Which versions are affected by CVE-2019-15276?
It affects 1 product.
Products include Cisco Wireless Lan Controller Software.
How do I fix CVE-2019-15276?
No fix has been published for CVE-2019-15276 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-2019-15276 being exploited?
There is no known exploitation of CVE-2019-15276 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Cisco Wireless Lan Controller Software
Sources
Also known as GHSA-6fp6-hh92-h5q5.