CVE-2019-1796: Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities
First published: Thu Apr 18 2019(Updated: )
A vulnerability in the handling of Inter-Access Point Protocol (IAPP) messages by Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability exist because the software improperly validates input on fields within IAPP messages. An attacker could exploit the vulnerability by sending malicious IAPP messages to an affected device. A successful exploit could allow the attacker to cause the Cisco WLC Software to reload, resulting in a DoS condition. Software versions prior to 8.2.170.0, 8.5.150.0, and 8.8.100.0 are affected.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Wireless LAN Controller | <8.2.170.0 | |
| Cisco Wireless LAN Controller Software | >=8.3.143.0<8.5.150.0 | |
| Cisco Wireless LAN Controller Software | >=8.7.106.0<8.8.100.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1796?
CVE-2019-1796 is a vulnerability in the handling of Inter-Access Point Protocol (IAPP) messages by Cisco Wireless LAN Controller (WLC) Software that could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition.
What is the severity of CVE-2019-1796?
The severity of CVE-2019-1796 is high with a severity value of 6.5.
Which software versions are affected by CVE-2019-1796?
Cisco Wireless LAN Controller (WLC) Software versions 8.2.170.0 to 8.8.100.0 are affected by CVE-2019-1796.
How can an attacker exploit CVE-2019-1796?
An unauthenticated, adjacent attacker can exploit CVE-2019-1796 by sending malicious Inter-Access Point Protocol (IAPP) messages, causing a denial of service (DoS) condition.
Where can I find more information about CVE-2019-1796?
You can find more information about CVE-2019-1796 at the following references: - [SecurityFocus](http://www.securityfocus.com/bid/108008) - [Cisco Security Advisory](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-wlc-iapp)
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