CVE-2020-35782 : Vulnerability Insights and Analysis
Learn about CVE-2020-35782 affecting certain NETGEAR devices due to lack of access control at the function level. Find out the impact, affected systems, and mitigation steps.
Certain NETGEAR devices are affected by lack of access control at the function level, impacting various models. The TFTP firmware update mechanism vulnerability allows remote attackers to write arbitrary data to internal memory.
Understanding CVE-2020-35782
This CVE identifies a security vulnerability in NETGEAR devices that can be exploited by attackers to write arbitrary data to the device's internal memory.
What is CVE-2020-35782?
CVE-2020-35782 is a vulnerability in NETGEAR devices that lack access control at the function level, affecting specific models due to a flaw in the TFTP firmware update mechanism.
The Impact of CVE-2020-35782
The vulnerability has a high impact on the integrity of affected devices, allowing remote attackers to compromise the internal memory without proper firmware validations.
Technical Details of CVE-2020-35782
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The lack of access control at the function level in certain NETGEAR devices, including JGS516PE, JGS524Ev2, JGS524PE, and GS116Ev2 before version 2.6.0.48, exposes them to exploitation.
Affected Systems and Versions
- JGS516PE before 2.6.0.48
- JGS524Ev2 before 2.6.0.48
- JGS524PE before 2.6.0.48
- GS116Ev2 before 2.6.0.48
Exploitation Mechanism
The TFTP firmware update mechanism in the affected devices does not properly implement firmware validations, enabling remote attackers to write arbitrary data to the internal memory.
Mitigation and Prevention
Protecting systems from CVE-2020-35782 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by NETGEAR promptly.
- Restrict network access to vulnerable devices.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update firmware and software on all network devices.
- Implement strong access control measures to limit unauthorized access.
- Conduct regular security audits and penetration testing.
Patching and Updates
Ensure that all affected NETGEAR devices are updated to version 2.6.0.48 or later to mitigate the vulnerability.