CVE-2020-35501 Explained : Impact and Mitigation
Learn about CVE-2020-35501, a flaw in the Linux kernel's audit rules implementation that could allow syscalls to evade proper logging, impacting system monitoring and security. Find mitigation steps and prevention measures.
A flaw in the Linux kernel's implementation of audit rules could lead to syscalls not being logged correctly by the audit subsystem.
Understanding CVE-2020-35501
This CVE identifies a vulnerability in the Linux kernel that may impact the logging of syscalls by the audit subsystem.
What is CVE-2020-35501?
The flaw in the Linux kernel's audit rules implementation can result in syscalls not being accurately logged by the audit subsystem, potentially affecting system monitoring and security.
The Impact of CVE-2020-35501
This vulnerability could allow malicious actors to evade detection and monitoring by exploiting the issue with syscall logging, potentially leading to unauthorized activities going unnoticed.
Technical Details of CVE-2020-35501
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The vulnerability lies in the Linux kernel's handling of audit rules, causing syscalls to not be properly logged by the audit subsystem when triggered.
Affected Systems and Versions
- Vendor: n/a
- Product: kernel
- Affected Versions: All versions up to kernel 5.17
Exploitation Mechanism
Malicious actors could potentially exploit this vulnerability to execute unauthorized actions on affected systems without being detected due to the failure of syscall logging.
Mitigation and Prevention
Protecting systems from CVE-2020-35501 requires immediate action and long-term security measures.
Immediate Steps to Take
- Monitor system logs and behavior for any suspicious activities that could indicate exploitation of the vulnerability.
- Apply security patches or updates provided by the Linux kernel maintainers to address the flaw.
Long-Term Security Practices
- Regularly update the kernel to the latest version to ensure patches for known vulnerabilities are applied.
- Implement additional security measures such as intrusion detection systems to enhance overall system monitoring and protection.
Patching and Updates
- Stay informed about security advisories from the Linux kernel community and promptly apply any patches released to mitigate the vulnerability.