CVE-2018-20336 Explained : Impact and Mitigation
Discover the impact of CVE-2018-20336 found in ASUSWRT 3.0.0.4.384.20308, leading to a stack-based buffer overflow and potential information disclosure. Learn about mitigation steps and prevention measures.
A vulnerability has been found in ASUSWRT 3.0.0.4.384.20308 that can lead to a stack-based buffer overflow, potentially resulting in information disclosure.
Understanding CVE-2018-20336
This CVE identifies a specific vulnerability in ASUSWRT 3.0.0.4.384.20308 related to a buffer overflow issue.
What is CVE-2018-20336?
CVE-2018-20336 is a vulnerability in the parse_req_queries function in wanduck.c in ASUSWRT 3.0.0.4.384.20308. It allows for a stack-based buffer overflow when a lengthy string is received over UDP, potentially leading to the inadvertent disclosure of information.
The Impact of CVE-2018-20336
The vulnerability can be exploited to trigger a buffer overflow, which may result in the exposure of sensitive information to unauthorized parties.
Technical Details of CVE-2018-20336
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The issue lies in the parse_req_queries function in wanduck.c, where a stack-based buffer overflow occurs due to the processing of long strings over UDP.
Affected Systems and Versions
- Product: ASUSWRT 3.0.0.4.384.20308
- Versions: All versions are affected
Exploitation Mechanism
The vulnerability can be exploited by sending a lengthy string over UDP, triggering the buffer overflow and potentially leading to information leakage.
Mitigation and Prevention
Protecting systems from CVE-2018-20336 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply security patches provided by ASUS promptly
- Monitor network traffic for any suspicious activities
- Implement network segmentation to limit the impact of potential attacks
Long-Term Security Practices
- Regularly update and patch all software and firmware on network devices
- Conduct security assessments and penetration testing to identify vulnerabilities
- Educate users on safe network practices and awareness of social engineering tactics
Patching and Updates
- ASUS has released patches to address the vulnerability, ensure all devices are updated with the latest firmware and software versions.