CVE-2020-21528 : Security Advisory and Response

A Segmentation Fault issue discovered in the ieee_segment function in outieee.c in nasm 2.14.03 and 2.15 allows remote attackers to cause a denial of service via crafted assembly file.

Understanding CVE-2020-21528

This CVE identifies a Segmentation Fault vulnerability in nasm versions 2.14.03 and 2.15.

What is CVE-2020-21528?

The CVE-2020-21528 vulnerability is caused by a flaw in the ieee_segment function in the nasm assembler, which can be exploited by remote attackers to trigger a denial of service by using a specially crafted assembly file.

The Impact of CVE-2020-21528

This vulnerability can lead to a denial of service, potentially disrupting the normal operation of the affected system.

Technical Details of CVE-2020-21528

Vulnerability Description

The vulnerability arises from a Segmentation Fault issue in the ieee_segment function within the outieee.c file of nasm versions 2.14.03 and 2.15.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions affected: n/a

Exploitation Mechanism

The vulnerability can be exploited remotely by attackers through the use of a specifically crafted assembly file.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest patches or updates provided by the vendor.
Avoid running nasm with untrusted or unknown assembly files.

Long-Term Security Practices

Regularly update and patch all software to prevent known vulnerabilities.
Implement network security measures to restrict access to vulnerable services.
Conduct regular security audits and assessments to identify and address potential risks.

Patching and Updates

It is crucial to update nasm to the latest version available to mitigate the CVE-2020-21528 vulnerability.