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CVE-2021-44957 : Vulnerability Insights and Analysis

Discover the impact of CVE-2021-44957, a global buffer overflow flaw in ffjpeg leading to Denial of Service attacks. Learn about affected systems and prevention measures.

A global buffer overflow vulnerability exists in ffjpeg through 01.01.2021, similar to CVE-2020-23705, leading to Denial of Service.

Understanding CVE-2021-44957

What is CVE-2021-44957?

The vulnerability is a global buffer overflow in ffjpeg, specifically in the jfif_encode function at ffjpeg/src/jfif.c (line 708), potentially triggered by a crafted jpeg file.

The Impact of CVE-2021-44957

This vulnerability can result in a Denial of Service (DoS) attack.

Technical Details of CVE-2021-44957

Vulnerability Description

The buffer overflow issue in ffjpeg could lead to DoS exploitation via a specially crafted jpeg file.

Affected Systems and Versions

        Product: Not applicable
        Vendor: Not applicable
        Versions affected: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by utilizing a crafted jpeg file.

Mitigation and Prevention

Immediate Steps to Take

        Update ffjpeg to the latest patched version.
        Avoid opening jpeg files from untrusted sources.

Long-Term Security Practices

        Implement secure coding practices to prevent buffer overflows.
        Regularly update and patch software to mitigate known vulnerabilities.

Patching and Updates

Apply patches and updates provided by the ffjpeg project to address the buffer overflow vulnerability.

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