CVE-2023-35136 Explained : Impact and Mitigation
Understand the impact of CVE-2023-35136, an improper input validation vulnerability in Zyxel firmware versions 4.32 through 5.37. Learn about affected systems, exploitation risks, and mitigation strategies.
A detailed overview of CVE-2023-35136, an improper input validation vulnerability in Zyxel firmware versions 4.32 through 5.37 affecting multiple series.
Understanding CVE-2023-35136
This section provides insights into the nature of the vulnerability and its impacts on affected systems.
What is CVE-2023-35136?
CVE-2023-35136 is an improper input validation vulnerability in the "Quagga" package of Zyxel firmware versions 4.32 through 5.37. It allows authenticated local attackers to access configuration files on affected devices.
The Impact of CVE-2023-35136
This vulnerability poses a medium-severity threat with a CVSS base score of 5.5. It has a high impact on confidentiality, potentially exposing sensitive information to unauthorized parties.
Technical Details of CVE-2023-35136
Explore the specific technical aspects of the vulnerability in this section.
Vulnerability Description
The vulnerability exists in the "Quagga" package of Zyxel firmware versions 4.32 through 5.37, enabling unauthorized access to configuration files by authenticated local attackers.
Affected Systems and Versions
Zyxel ATP series firmware, USG FLEX series firmware, USG FLEX 50(W) series firmware, USG20(W)-VPN series firmware, and VPN series firmware versions 4.32 through 5.37 are impacted by this vulnerability.
Exploitation Mechanism
An authenticated local attacker can leverage this vulnerability to gain access to configuration files on the affected devices, potentially leading to unauthorized data exposure.
Mitigation and Prevention
Learn about the steps to mitigate the risks associated with CVE-2023-35136 and protect your systems.
Immediate Steps to Take
It is recommended to apply security patches provided by Zyxel promptly to address this vulnerability. Ensure that all affected firmware versions are updated to mitigate the risk of exploitation.
Long-Term Security Practices
Implement robust security policies, restrict network access to authorized users, and regularly monitor system logs for any suspicious activities to enhance overall security posture.
Patching and Updates
Regularly check for security advisories from Zyxel and promptly apply firmware updates to address known vulnerabilities and bolster the security of your systems.