CVE-2020-14351 Explained : Impact and Mitigation

A flaw was found in the Linux kernel that could allow a local attacker to escalate privileges and compromise system integrity.

Understanding CVE-2020-14351

This CVE involves a use-after-free memory flaw in the perf subsystem of the Linux kernel, potentially leading to memory corruption and privilege escalation.

What is CVE-2020-14351?

The vulnerability in the Linux kernel's perf subsystem could be exploited by a local attacker with permission to monitor perf events, posing risks to data confidentiality, integrity, and system availability.

The Impact of CVE-2020-14351

The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability, due to the potential for memory corruption and privilege escalation.

Technical Details of CVE-2020-14351

This section provides more detailed technical insights into the CVE.

Vulnerability Description

A use-after-free memory flaw in the perf subsystem of the Linux kernel allows local attackers to corrupt memory and potentially escalate privileges.

Affected Systems and Versions

Affected Product: Linux kernel
Affected Version: kernel 5.8.17

Exploitation Mechanism

The vulnerability can be exploited by a local attacker with permission to monitor perf events, enabling them to corrupt memory and potentially escalate privileges.

Mitigation and Prevention

Protecting systems from CVE-2020-14351 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security updates promptly to patch the vulnerability.
Monitor system logs for any suspicious activities.
Restrict access to sensitive system components.

Long-Term Security Practices

Implement the principle of least privilege to limit user access rights.
Conduct regular security audits and vulnerability assessments.
Educate users on security best practices to prevent exploitation.

Patching and Updates

Update the Linux kernel to a non-vulnerable version, if available.
Follow vendor recommendations for security patches and updates.