CVE-2019-19787 : Vulnerability Insights and Analysis

ATasm 1.06 has a stack-based buffer overflow vulnerability in the get_signed_expression() function in setparse.c, which can be exploited via a crafted .m65 file.

Understanding CVE-2019-19787

This CVE entry describes a specific vulnerability in ATasm 1.06 that allows for a stack-based buffer overflow.

What is CVE-2019-19787?

The vulnerability in the get_signed_expression() function in setparse.c of ATasm 1.06 enables attackers to trigger a stack-based buffer overflow by utilizing a manipulated .m65 file.

The Impact of CVE-2019-19787

Exploiting this vulnerability could lead to arbitrary code execution or denial of service (DoS) attacks, potentially compromising the integrity and availability of the affected system.

Technical Details of CVE-2019-19787

This section provides more in-depth technical insights into the CVE-2019-19787 vulnerability.

Vulnerability Description

The vulnerability arises from a stack-based buffer overflow in the get_signed_expression() function within setparse.c of ATasm 1.06 when processing specially crafted .m65 files.

Affected Systems and Versions

Product: ATasm 1.06
Vendor: N/A
Versions: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by creating a malicious .m65 file that triggers the stack-based buffer overflow in the get_signed_expression() function.

Mitigation and Prevention

To address CVE-2019-19787 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Avoid opening or processing untrusted .m65 files.
Implement file input validation to prevent the execution of malicious code.

Long-Term Security Practices

Regularly update ATasm to the latest version to patch known vulnerabilities.
Conduct security training for developers to raise awareness of secure coding practices.

Patching and Updates

Apply patches provided by the vendor promptly to mitigate the vulnerability and enhance system security.