CVE-2018-5803 : Security Advisory and Response

A vulnerability in the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102 allows for a kernel crash due to manipulation of SCTP packets length.

Understanding CVE-2018-5803

This CVE involves a denial of service vulnerability in the Linux Kernel.

What is CVE-2018-5803?

The vulnerability exists in versions of the Linux Kernel prior to specific versions and can lead to a kernel crash if SCTP packets length are manipulated.

The Impact of CVE-2018-5803

The vulnerability can be exploited to cause a denial of service by crashing the kernel.

Technical Details of CVE-2018-5803

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability is present in the "_sctp_make_chunk()" function in net/sctp/sm_make_chunk.c in the Linux Kernel.

Affected Systems and Versions

Product: Linux Kernel
Vendor: Linux Foundation
Affected Versions: Before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102

Exploitation Mechanism

The vulnerability can be exploited by manipulating the length of SCTP packets, leading to a kernel crash.

Mitigation and Prevention

Protect your systems from CVE-2018-5803 with these mitigation strategies.

Immediate Steps to Take

Apply relevant security patches provided by the Linux Kernel.
Monitor for any unusual kernel crashes or system instability.

Long-Term Security Practices

Keep your Linux Kernel up to date with the latest security patches.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Regularly check for and apply updates and patches released by the Linux Kernel to address this vulnerability.