CVE-2021-39542 : Vulnerability Insights and Analysis
Learn about CVE-2021-39542, a vulnerability in pdftools through 20200714 that allows attackers to cause a Denial of Service attack by exploiting a NULL pointer dereference in the Font::Size() function.
This CVE-2021-39542 article provides insights into a vulnerability discovered in pdftools through 20200714 that could lead to a Denial of Service (DoS) attack.
Understanding CVE-2021-39542
This section delves deeper into the impact and technical details of the CVE-2021-39542 vulnerability.
What is CVE-2021-39542?
CVE-2021-39542 involves a NULL pointer dereference within the Font::Size() function in font.cpp, potentially enabling attackers to initiate a DoS attack.
The Impact of CVE-2021-39542
The vulnerability allows attackers to exploit the NULL pointer dereference to carry out a Denial of Service attack.
Technical Details of CVE-2021-39542
This section explores the technical aspects of the vulnerability.
Vulnerability Description
The issue in pdftools through 20200714 arises from a NULL pointer dereference in the Font::Size() function in font.cpp.
Affected Systems and Versions
- Affected Product: N/A
- Affected Version: N/A
Exploitation Mechanism
The vulnerability in Font::Size() can be exploited by attackers to trigger a DoS attack.
Mitigation and Prevention
Discover steps to mitigate and prevent potential risks associated with CVE-2021-39542.
Immediate Steps to Take
- Implement patches or updates provided by the vendor.
- Monitor security advisories for further instructions.
Long-Term Security Practices
- Conduct regular security assessments and audits.
- Stay informed about new vulnerabilities and their mitigations.
Patching and Updates
Regularly apply security patches and updates to the affected software.