CVE-2021-39540 : What You Need to Know
Learn about CVE-2021-39540, a vulnerability in pdftools allowing an attacker to execute code. Find out its impact, affected systems, exploitation, and mitigation steps.
This CVE article provides details about a vulnerability in pdftools through 20200714 that allows an attacker to cause code execution.
Understanding CVE-2021-39540
This section will explain the impact and technical details of CVE-2021-39540.
What is CVE-2021-39540?
An issue was discovered in pdftools through 20200714 where a stack-buffer-overflow exists in the function Analyze::AnalyzePages() located in analyze.cpp, allowing an attacker to cause code execution.
The Impact of CVE-2021-39540
The vulnerability can lead to unauthorized remote code execution, posing a significant security risk.
Technical Details of CVE-2021-39540
Let's delve into the technical aspects of this vulnerability.
Vulnerability Description
A stack-buffer-overflow was found in the Analyze::AnalyzePages() function in analyze.cpp in pdftools through 20200714, enabling an attacker to execute arbitrary code.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions: n/a
Exploitation Mechanism
The vulnerability can be exploited by crafting a malicious PDF file to trigger the stack-buffer-overflow and execute arbitrary code.
Mitigation and Prevention
Protect your systems from CVE-2021-39540 with these mitigation strategies.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update software and applications to the latest versions.
- Implement network segmentation and least privilege access controls.
Patching and Updates
Stay informed about security updates for pdftools and ensure timely patching of any identified vulnerabilities.