CVE-2019-1800 : What You Need to Know
Learn about CVE-2019-1800, a high-severity vulnerability in Cisco Wireless LAN Controller Software allowing DoS attacks. Find mitigation steps and version details here.
Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities
Understanding CVE-2019-1800
This CVE involves a vulnerability in Cisco Wireless LAN Controller (WLC) Software that could allow an unauthenticated attacker to trigger a denial of service (DoS) condition by exploiting the handling of Inter-Access Point Protocol (IAPP) messages.
What is CVE-2019-1800?
The vulnerability arises from inadequate validation of input in IAPP messages, enabling an attacker to send malicious messages to a device, potentially forcing the affected software to reload and causing a DoS situation.
The Impact of CVE-2019-1800
- CVSS Base Score: 7.4 (High)
- Attack Vector: Adjacent Network
- Availability Impact: High
- The attacker can exploit the vulnerability without requiring any privileges, leading to a significant impact on the availability of the system.
Technical Details of CVE-2019-1800
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Cisco WLC Software allows an adjacent attacker to exploit IAPP message handling, leading to a DoS condition due to inadequate input validation.
Affected Systems and Versions
- Affected Product: Cisco Wireless LAN Controller (WLC)
- Vulnerable Versions:
- Versions prior to 8.2.170.0
- Versions prior to 8.3.150.0
- Versions prior to 8.8.100.0
Exploitation Mechanism
- An unauthenticated attacker sends malicious IAPP messages to the targeted device.
- Successful exploitation can force the affected Cisco WLC Software to reload, causing a DoS situation.
Mitigation and Prevention
Guidelines to mitigate the impact of CVE-2019-1800.
Immediate Steps to Take
- Update Cisco WLC Software to versions 8.2.170.0, 8.5.150.0, or 8.8.100.0 to eliminate the vulnerability.
- Monitor network traffic for any suspicious IAPP messages.
Long-Term Security Practices
- Regularly update software and firmware to patch known vulnerabilities.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Apply security patches provided by Cisco to address the vulnerability.