CVE-2019-14528 : Security Advisory and Response

GnuCOBOL 2.2 has a heap-based buffer overflow vulnerability in the read_literal function when processing specially crafted COBOL source code.

Understanding CVE-2019-14528

This CVE involves a heap-based buffer overflow in GnuCOBOL 2.2, potentially leading to security issues.

What is CVE-2019-14528?

The read_literal function in cobc/scanner.l of GnuCOBOL 2.2 is susceptible to a heap-based buffer overflow triggered by maliciously crafted COBOL source code.

The Impact of CVE-2019-14528

The vulnerability could allow an attacker to execute arbitrary code or crash the application, posing a significant security risk to systems running the affected version.

Technical Details of CVE-2019-14528

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

Vulnerability Description

The read_literal function in GnuCOBOL 2.2's cobc/scanner.l is vulnerable to a heap-based buffer overflow due to improper input validation.

Affected Systems and Versions

Product: GnuCOBOL 2.2
Version: All versions are affected

Exploitation Mechanism

The vulnerability can be exploited by an attacker by crafting malicious COBOL source code to trigger the heap-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2019-14528 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update GnuCOBOL to a patched version or apply relevant security fixes provided by the vendor.
Monitor for any unusual activities on the system that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflows and other common vulnerabilities.
Regularly update and patch software to address known security issues.
Conduct security assessments and audits to identify and mitigate potential risks.

Patching and Updates

Ensure timely installation of security patches and updates for GnuCOBOL to address the heap-based buffer overflow vulnerability.