CVE-2018-10938 : Security Advisory and Response

The Linux kernel vulnerability in the cipso_v4_optptr() function can lead to a denial-of-service attack.

Understanding CVE-2018-10938

This CVE involves a flaw in the Linux kernel that allows an attacker to trigger an infinite loop, resulting in a denial-of-service condition.

What is CVE-2018-10938?

The vulnerability exists in the cipso_v4_optptr() function in the Linux kernel versions 4.0-rc1 through 4.13-rc4.
An attacker can exploit this flaw by sending a specially crafted network packet remotely.
To successfully exploit the vulnerability, a specific configuration of LSM and NetLabel must be present on the target system.

The Impact of CVE-2018-10938

Exploitation of this vulnerability can lead to a denial-of-service condition on the affected system.

Technical Details of CVE-2018-10938

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The flaw allows an attacker to cause the kernel to enter an endless loop, resulting in a denial-of-service.

Affected Systems and Versions

Versions 4.0-rc1 through 4.13-rc4 of the Linux kernel are affected by this vulnerability.

Exploitation Mechanism

An attacker can trigger the vulnerability by sending a specifically designed network packet remotely.

Mitigation and Prevention

Protecting systems from CVE-2018-10938 is crucial to prevent denial-of-service attacks.

Immediate Steps to Take

Apply patches provided by the Linux kernel maintainers to address this vulnerability.
Monitor for any unusual network activity that could indicate exploitation attempts.

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version to mitigate known vulnerabilities.
Implement proper network security measures to detect and prevent malicious network traffic.

Patching and Updates

Stay informed about security advisories and updates from Linux distributions and vendors to apply patches promptly.