CVE-2019-8343 : Security Advisory and Response

A use-after-free vulnerability has been discovered in the paste_tokens function of asm/preproc.c in version 2.14.02 of Netwide Assembler (NASM).

Understanding CVE-2019-8343

This CVE-2019-8343 involves a use-after-free vulnerability in NASM version 2.14.02.

What is CVE-2019-8343?

The vulnerability exists in the paste_tokens function of asm/preproc.c in NASM version 2.14.02, potentially allowing attackers to execute arbitrary code or cause a denial of service.

The Impact of CVE-2019-8343

This vulnerability could be exploited by malicious actors to compromise affected systems, leading to unauthorized access, data breaches, or system crashes.

Technical Details of CVE-2019-8343

Vulnerability Description

A use-after-free flaw in the paste_tokens function of NASM version 2.14.02.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Version: 2.14.02

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a special NASM source file to trigger the use-after-free condition and potentially execute malicious code.

Mitigation and Prevention

Immediate Steps to Take

Update NASM to a patched version that addresses the use-after-free vulnerability.
Monitor for any unusual system behavior that could indicate exploitation.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.
Implement code review processes to catch potential memory-related issues early.

Patching and Updates

Check for security advisories from NASM and apply patches promptly to mitigate the risk of exploitation.