CVE-2021-44503 : Security Advisory and Response

An issue was discovered in FIS GT.M through V7.0-000 (related to the YottaDB code base) where an attacker can cause a memory segmentation fault.

Understanding CVE-2021-44503

What is CVE-2021-44503?

CVE-2021-44503 is a vulnerability in FIS GT.M that allows an attacker to trigger a memory segmentation fault through crafted input.

The Impact of CVE-2021-44503

The vulnerability could lead to a memory segmentation fault, potentially causing a denial of service or enabling further attacks on the system.

Technical Details of CVE-2021-44503

Vulnerability Description

The issue in FIS GT.M allows an attacker to exploit the va_arg function on an empty variadic parameter list, leading to a memory segmentation fault.

Affected Systems and Versions

Versions affected: FIS GT.M through V7.0-000

Exploitation Mechanism

By using crafted input, the attacker can trigger a call to va_arg on an empty variadic parameter list, exploiting the vulnerability.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest patches provided by the vendor to address this vulnerability.
Monitor system logs for any unusual activity that could indicate exploitation.

Long-Term Security Practices

Regularly update and patch all software and libraries to prevent known vulnerabilities.
Implement strong input validation to mitigate the risk of crafted input attacks.
Conduct regular security assessments and audits of the system.

Patching and Updates

Check the vendor's official website for patch releases and follow their instructions for applying updates.