CVE-2017-15115 : What You Need to Know

In November 2017, a vulnerability was identified in the Linux kernel before version 4.14, known as CVE-2017-15115, which could be exploited by local users to cause a denial of service and potentially lead to system crashes.

Understanding CVE-2017-15115

What is CVE-2017-15115?

In the Linux kernel before version 4.14, a function called sctp_do_peeloff in the net/sctp/socket.c file lacked proper verification during a peel-off action, allowing local users to trigger denial of service attacks and system crashes through use-after-free vulnerabilities.

The Impact of CVE-2017-15115

This vulnerability could be exploited by local users to disrupt system operations, potentially leading to system crashes and other unspecified consequences when manipulated with malicious system calls.

Technical Details of CVE-2017-15115

Vulnerability Description

The vulnerability in the sctp_do_peeloff function of the Linux kernel before version 4.14 allows local users to exploit use-after-free vulnerabilities, leading to denial of service and system crashes.

Affected Systems and Versions

Product: Linux kernel before 4.14-rc6
Versions: Linux kernel before 4.14-rc6

Exploitation Mechanism

The vulnerability can be exploited by local users through crafted system calls, causing use-after-free vulnerabilities and potentially resulting in denial of service and system crashes.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by the Linux kernel maintainers promptly.
Monitor official security advisories for updates and mitigation strategies.

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version.
Implement least privilege access controls to limit the impact of potential vulnerabilities.
Conduct regular security audits and assessments to identify and address vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by the Linux kernel maintainers to address CVE-2017-15115.