CVE-2019-19786 Explained : Impact and Mitigation

ATasm 1.06 has a vulnerability in the parse_expr() function in setparse.c that can lead to a stack-based buffer overflow when processing a specially crafted .m65 file.

Understanding CVE-2019-19786

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

What is CVE-2019-19786?

The parse_expr() function in setparse.c of ATasm 1.06 is susceptible to a stack-based buffer overflow triggered by processing a specifically crafted .m65 file.

The Impact of CVE-2019-19786

The vulnerability could allow an attacker to execute arbitrary code or crash the application, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2019-19786

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

Vulnerability Description

The parse_expr() function in setparse.c of ATasm 1.06 is vulnerable to a stack-based buffer overflow when handling a maliciously crafted .m65 file.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability can be exploited by an attacker by providing a specially crafted .m65 file to trigger the stack-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2019-19786 requires immediate actions and long-term security practices.

Immediate Steps to Take

Avoid opening untrusted .m65 files from unknown or unverified sources.
Consider disabling the affected function until a patch is available.

Long-Term Security Practices

Regularly update software and apply patches promptly.
Implement code reviews and security testing to identify and address vulnerabilities.

Patching and Updates

Check for security advisories and updates from the software vendor.
Apply patches or upgrades provided by the vendor to mitigate the vulnerability.