CVE-2021-44493 : Security Advisory and Response

YottaDB and FIS GT.M are affected by a vulnerability that could lead to a buffer overflow due to improper input handling.

Understanding CVE-2021-44493

An issue in YottaDB and FIS GT.M can be exploited by an attacker to trigger a buffer overflow through manipulated input.

What is CVE-2021-44493?

The vulnerability in YottaDB and FIS GT.M allows an attacker to manipulate input to trigger a buffer overflow, potentially leading to a security compromise.

The Impact of CVE-2021-44493

Exploitation of this vulnerability can result in a buffer overflow, which may allow attackers to execute arbitrary code or crash the application, posing a risk to the integrity and availability of the system.

Technical Details of CVE-2021-44493

YottaDB and FIS GT.M are susceptible to a buffer overflow vulnerability due to improper input validation.

Vulnerability Description

Using crafted input, an attacker can manipulate a signed integer, leading to a buffer overflow during a memcpy call, potentially causing stack corruption.

Affected Systems and Versions

YottaDB through version r1.32
FIS GT.M through version V7.0-000

Exploitation Mechanism

By forcing a signed integer to hold a large negative number in a $Extract call, attackers can exploit the memcpy call on the stack, leading to a buffer overflow.

Mitigation and Prevention

Immediate action and long-term security practices recommended to mitigate the CVE-2021-44493 vulnerability.

Immediate Steps to Take

Apply security patches released by YottaDB and FIS GT.M promptly.
Monitor for any signs of unauthorized access or abnormal system behavior.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflows.
Conduct regular security assessments and penetration testing to identify and remediate vulnerabilities.
Stay informed about security updates and best practices in secure programming.

Patching and Updates

Ensure timely deployment of patches and updates provided by YottaDB and FIS GT.M to address the buffer overflow vulnerability.