CVE-2017-17052 : Vulnerability Insights and Analysis

In the Linux kernel prior to version 4.12.10, a vulnerability exists in the mm_init function in the fork.c file that could be exploited by a local attacker to achieve a use-after-free vulnerability or cause other unspecified impacts.

Understanding CVE-2017-17052

This CVE entry highlights a flaw in the Linux kernel that could lead to potential security risks.

What is CVE-2017-17052?

The vulnerability in the mm_init function of the Linux kernel allows a malicious actor to exploit the ->exe_file attribute of a newly created process's mm_struct, potentially resulting in a use-after-free vulnerability or other impacts when running a specially crafted program.

The Impact of CVE-2017-17052

The exploitation of this vulnerability could lead to severe consequences, including unauthorized access, data manipulation, or system crashes.

Technical Details of CVE-2017-17052

This section delves into the technical aspects of the CVE entry.

Vulnerability Description

The mm_init function in kernel/fork.c in the Linux kernel before 4.12.10 fails to clear the ->exe_file member of a new process's mm_struct, enabling a local attacker to trigger a use-after-free scenario or other unspecified impacts through a specially crafted program.

Affected Systems and Versions

Affected Version: Linux kernel versions prior to 4.12.10
Systems: Linux systems running the vulnerable kernel versions

Exploitation Mechanism

The vulnerability can be exploited locally by executing a specially crafted program to manipulate the mm_struct of a new process and potentially achieve a use-after-free condition.

Mitigation and Prevention

Protecting systems from CVE-2017-17052 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to Linux kernel version 4.12.10 or later to mitigate the vulnerability
Monitor system logs for any suspicious activities

Long-Term Security Practices

Implement the principle of least privilege to restrict access
Regularly apply security patches and updates to the kernel and other software

Patching and Updates

Regularly check for and apply security patches released by the Linux kernel maintainers
Stay informed about security advisories and updates from trusted sources