CVE-2019-19785 : What You Need to Know

ATasm 1.06 has a vulnerability in the to_comma() function within asm.c, leading to a stack-based buffer overflow when processing a malicious .m65 file.

Understanding CVE-2019-19785

This CVE entry describes a specific vulnerability in ATasm 1.06 that can be exploited through a crafted .m65 file.

What is CVE-2019-19785?

CVE-2019-19785 is a stack-based buffer overflow vulnerability in the to_comma() function within asm.c in ATasm 1.06.

The Impact of CVE-2019-19785

The vulnerability allows an attacker to execute arbitrary code or crash the application by exploiting the buffer overflow.

Technical Details of CVE-2019-19785

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability arises from improper input validation in the to_comma() function, enabling a stack-based buffer overflow.

Affected Systems and Versions

ATasm 1.06 is affected by this vulnerability.

Exploitation Mechanism

Exploitation occurs through the processing of a specially crafted .m65 file, triggering the buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2019-19785 involves immediate actions and long-term security measures.

Immediate Steps to Take

Avoid opening or processing untrusted .m65 files.
Implement file input validation to prevent buffer overflows.

Long-Term Security Practices

Regularly update ATasm to the latest version to patch known vulnerabilities.

Patching and Updates

Apply patches provided by the vendor to address the buffer overflow vulnerability.