CVE-2021-45972 : Vulnerability Insights and Analysis

The giftrans function in giftrans 1.12.2 has a stack-based buffer overflow vulnerability that allows an attacker to overwrite up to 250 bytes with arbitrary data.

Understanding CVE-2021-45972

This CVE relates to a specific vulnerability in the giftrans function.

What is CVE-2021-45972?

The giftrans function in giftrans 1.12.2 contains a stack-based buffer overflow where an input file value can lead to data being written beyond the allocated buffer.

The Impact of CVE-2021-45972

Attackers can exploit this vulnerability to overwrite up to 250 bytes outside the buffer, potentially enabling them to execute arbitrary code or disrupt the application.

Technical Details of CVE-2021-45972

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability originates in the giftrans 1.12.2 function due to an inadequately controlled write operation based on an input value.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Version: n/a

Exploitation Mechanism

The issue arises from a lack of proper bounds checking, allowing an attacker to manipulate file values to surpass the buffer's limits.

Mitigation and Prevention

Protective measures and steps to address the CVE.

Immediate Steps to Take

Disable or restrict access to the giftrans function if not essential.
Implement input validation to ensure data within acceptable ranges.
Monitor systems for any suspicious activities.

Long-Term Security Practices

Regularly update software and apply patches promptly.
Conduct security audits and penetration testing to uncover vulnerabilities.
Educate developers on secure coding practices.

Patching and Updates

Check for patches or updates provided by giftrans or relevant software vendors.
Apply patches as soon as they are available to mitigate the vulnerability.