CVE-2020-35683 : Security Advisory and Response
Discover the impact of CVE-2020-35683 in HCC Nichestack 3.0. Learn about the Denial-of-Service vulnerability arising from unchecked IP payload size computation and how to mitigate it.
An issue was discovered in HCC Nichestack 3.0 where the code parsing ICMP packets relies on an unchecked value of the IP payload size, leading to a Denial-of-Service vulnerability.
Understanding CVE-2020-35683
This CVE involves a vulnerability in HCC Nichestack 3.0 that could be exploited to cause a Denial-of-Service.
What is CVE-2020-35683?
The vulnerability arises from the computation of the ICMP checksum using an unchecked IP payload size value, potentially leading to out-of-bounds reads.
The Impact of CVE-2020-35683
The vulnerability could be exploited to trigger a Denial-of-Service condition, affecting the availability of the system.
Technical Details of CVE-2020-35683
This section delves into the technical aspects of the CVE.
Vulnerability Description
The issue stems from the reliance on an unchecked IP payload size value in computing the ICMP checksum, allowing for potential out-of-bounds reads.
Affected Systems and Versions
- Product: HCC Nichestack 3.0
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
By setting the IP payload size smaller than the IP header size, attackers can exploit the vulnerability to cause a Denial-of-Service.
Mitigation and Prevention
Protecting systems from CVE-2020-35683 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update and patch all software components.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users and IT staff on best security practices.
- Implement intrusion detection and prevention systems.
- Stay informed about emerging threats and security vulnerabilities.
Patching and Updates
- Check for patches or updates provided by the vendor to address the vulnerability.
- Apply patches following recommended procedures to ensure system security.