CVE-2020-28588 : Security Advisory and Response

An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel versions 5.1 Stable, 5.4.66, and potentially all versions in between. Attackers can exploit this issue to leak memory contents.

Understanding CVE-2020-28588

This CVE involves an information disclosure vulnerability in the Linux Kernel that can be triggered by reading /proc/pid/syscall.

What is CVE-2020-28588?

This CVE identifies a flaw in the Linux Kernel versions 5.1 Stable and 5.4.66, allowing attackers to access memory contents by exploiting the /proc/pid/syscall functionality.

The Impact of CVE-2020-28588

The vulnerability has a CVSS base score of 4, indicating a medium severity issue with low confidentiality impact and no integrity impact. The attack complexity is low, requiring local access.

Technical Details of CVE-2020-28588

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to read /proc/pid/syscall, leading to the leakage of memory contents within the Linux Kernel.

Affected Systems and Versions

Linux Kernel v5.1 Stable
Linux Kernel v5.4.66
Linux Kernel v5.9.8

Exploitation Mechanism

Attackers can exploit the vulnerability by reading /proc/pid/syscall, triggering the leakage of memory contents.

Mitigation and Prevention

Protecting systems from CVE-2020-28588 involves taking immediate and long-term security measures.

Immediate Steps to Take

Monitor system logs for any suspicious activity related to /proc/pid/syscall access.
Apply security patches provided by the Linux Kernel maintainers.

Long-Term Security Practices

Regularly update the Linux Kernel to the latest stable version.
Implement access controls to restrict unauthorized access to sensitive kernel functionalities.

Patching and Updates

Ensure timely installation of security patches released by the Linux Kernel maintainers to address the vulnerability.