CVE-2018-19214 : Exploit Details and Defense Strategies

Netwide Assembler (NASM) version 2.14rc15 has a vulnerability due to a heap-based buffer over-read in the expand_mmac_params function.

Understanding CVE-2018-19214

This CVE involves a specific vulnerability in NASM version 2.14rc15 that can lead to security issues.

What is CVE-2018-19214?

The vulnerability in NASM version 2.14rc15 is a heap-based buffer over-read in the expand_mmac_params function located in the asm/preproc.c file. It is caused by inadequate input handling.

The Impact of CVE-2018-19214

This vulnerability could be exploited by attackers to potentially execute arbitrary code or cause a denial of service (DoS) on systems running the affected version of NASM.

Technical Details of CVE-2018-19214

NASM version 2.14rc15 is susceptible to a specific type of buffer over-read vulnerability.

Vulnerability Description

The vulnerability lies in the expand_mmac_params function within the asm/preproc.c file, resulting from insufficient input validation.

Affected Systems and Versions

Product: Netwide Assembler (NASM)
Vendor: N/A
Version: 2.14rc15

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input that triggers the buffer over-read, potentially leading to unauthorized code execution or system crashes.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update NASM to a patched version that addresses the buffer over-read issue.
Monitor for any unusual activities on systems running the vulnerable NASM version.

Long-Term Security Practices

Regularly update software and apply patches to mitigate known vulnerabilities.
Implement robust input validation mechanisms to prevent buffer over-read and other similar vulnerabilities.

Patching and Updates

Ensure that NASM is regularly updated to the latest version to protect systems from known security vulnerabilities.