CVE-2021-39564 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2021-39564, a vulnerability in swftools through 20200710 that leads to a heap-buffer-overflow.

Understanding CVE-2021-39564

CVE-2021-39564 is a vulnerability in swftools that allows an attacker to execute malicious code by exploiting a heap-buffer-overflow in the function swf_DumpActions() located in swfaction.c.

What is CVE-2021-39564?

An issue was discovered in swftools through 20200710, where a heap-buffer-overflow exists in the function swf_DumpActions(), allowing an attacker to cause code execution.

The Impact of CVE-2021-39564

The vulnerability can be exploited by an attacker to execute arbitrary code, potentially leading to unauthorized access, data theft, or system compromise.

Technical Details of CVE-2021-39564

CVE ID: CVE-2021-39564 Published Date: 2021-09-20T15:27:14

Vulnerability Description

A heap-buffer-overflow exists in the function swf_DumpActions() in swfaction.c in swftools through 20200710, enabling an attacker to execute arbitrary code.

Affected Systems and Versions

Product: Not Applicable
Vendor: Not Applicable
Versions: Not Applicable

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious input to trigger the heap-buffer-overflow and execute unauthorized code on the target system.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices can help mitigate the risks associated with CVE-2021-39564.

Immediate Steps to Take

Disable the affected software until a patch is available.
Monitor network traffic for any signs of exploitation attempts.

Long-Term Security Practices

Keep software and systems updated with the latest security patches.
Conduct regular security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Apply the latest patches and updates provided by the software vendor to address the vulnerability and enhance the overall security posture of the system.