CVE-2019-15276 Explained : Impact and Mitigation
Learn about CVE-2019-15276, a high-severity vulnerability in Cisco Wireless LAN Controller Software allowing remote attackers to cause denial of service. Find mitigation steps and patching details.
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 flaw is a result of the HTTP parsing engine's inability to handle specifically crafted URLs.
Understanding CVE-2019-15276
This CVE involves a flaw in the Cisco Wireless LAN Controller Software that could lead to a denial of service situation.
What is CVE-2019-15276?
The vulnerability allows a remote attacker with low privileges to disrupt the functioning of the affected device by exploiting the HTTP parsing engine's inability to handle crafted URLs.
The Impact of CVE-2019-15276
- CVSS Base Score: 7.7 (High Severity)
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- User Interaction: None
- Availability Impact: High
- Successful exploitation could lead to an unexpected device restart, causing a denial of service situation.
Technical Details of CVE-2019-15276
This section provides more in-depth technical details about the vulnerability.
Vulnerability Description
The flaw in the web interface of the Cisco Wireless LAN Controller Software allows attackers to disrupt device functioning by submitting manipulated URLs.
Affected Systems and Versions
- Affected Product: Cisco Wireless LAN Controller (WLC)
- Vendor: Cisco
- Affected Version: Unspecified
Exploitation Mechanism
- Attacker must authenticate with limited privileges to the affected controller
- Submit manipulated URL through the device's web interface
- Alternatively, trick a user into clicking on the manipulated URL
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate steps and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates
- Monitor network traffic for signs of exploitation
- Restrict access to the web interface of affected devices
Long-Term Security Practices
- Regularly update and patch software and firmware
- Conduct security awareness training to educate users about phishing attacks
Patching and Updates
- Cisco has released patches to address this vulnerability
- Ensure all affected systems are updated with the latest security fixes