cisco-sa-20191106-wlc-dos: Cisco Wireless LAN Controller HTTP Parsing Engine Denial of Service Vulnerability
First published: Wed Nov 06 2019(Updated: )
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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-wlc-dos
Credit: independent security researcher SecuNinja.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Wireless LAN Controller (WLC) Software |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-20191106-wlc-dos?
The severity level of cisco-sa-20191106-wlc-dos is classified as high due to its capacity to cause a denial of service.
How do I fix cisco-sa-20191106-wlc-dos?
To fix cisco-sa-20191106-wlc-dos, it is recommended to apply the necessary patches or updates provided by Cisco.
Who is affected by cisco-sa-20191106-wlc-dos?
Cisco Wireless LAN Controller Software users with low-privileged, authenticated accounts are affected by cisco-sa-20191106-wlc-dos.
What type of attack does cisco-sa-20191106-wlc-dos enable?
cisco-sa-20191106-wlc-dos enables a remote denial of service (DoS) attack on affected devices.
Can cisco-sa-20191106-wlc-dos be exploited remotely?
Yes, cisco-sa-20191106-wlc-dos can be exploited remotely by an authenticated low-privileged attacker.
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