CVE-2018-0442 : Vulnerability Insights and Analysis
Discover the impact of CVE-2018-0442, a high-severity vulnerability in Cisco Wireless LAN Controller Software, allowing unauthorized access to memory contents and confidential information. Learn how to mitigate and prevent exploitation.
A weakness has been found in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol component of Cisco Wireless LAN Controller (WLC) Software, potentially allowing unauthorized remote access to memory contents, leading to exposure of confidential information.
Understanding CVE-2018-0442
This CVE identifies a vulnerability in Cisco Wireless LAN Controller Software that could result in information disclosure due to inadequate checks in the CAPWAP protocol component.
What is CVE-2018-0442?
The vulnerability in the CAPWAP protocol component of Cisco WLC Software allows a remote attacker to access and retrieve memory contents, potentially exposing confidential information.
The Impact of CVE-2018-0442
- CVSS Base Score: 7.5 (High Severity)
- Confidentiality Impact: High
- Attack Vector: Network
- Attack Complexity: Low
- No user interaction or privileges required
- Exploiting this vulnerability could lead to unauthorized access to sensitive information stored in the device's memory.
Technical Details of CVE-2018-0442
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from insufficient checks in the code handling CAPWAP keepalive requests, allowing attackers to send crafted packets to retrieve memory contents.
Affected Systems and Versions
- Affected Product: Cisco Wireless LAN Controller (WLC)
- Vulnerable Version: Not Applicable (n/a)
Exploitation Mechanism
- Attackers exploit the vulnerability by sending specially crafted CAPWAP keepalive packets to vulnerable Cisco WLC devices, enabling them to access memory contents.
Mitigation and Prevention
Protect your systems from CVE-2018-0442 with the following measures:
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor Cisco's security advisories for any new information or mitigations.
Long-Term Security Practices
- Regularly update and patch all software and firmware to prevent vulnerabilities.
- Implement network segmentation and access controls to limit exposure to potential attacks.
- Conduct regular security assessments and audits to identify and address any security gaps.
Patching and Updates
- Cisco has released security advisories and patches to address this vulnerability. Ensure timely application of these updates to secure your systems.