CVE-2021-39562 : Vulnerability Insights and Analysis
Discover the impact of CVE-2021-39562, a vulnerability in swftools through 20200710 that allows attackers to cause Denial of Service. Learn about affected systems, exploitation, and mitigation steps.
This CVE-2021-39562 article provides details about a vulnerability found in swftools through 20200710 that can lead to Denial of Service.
Understanding CVE-2021-39562
This section will cover the basics of CVE-2021-39562.
What is CVE-2021-39562?
The vulnerability lies in the function FileStream::makeSubStream() in Stream.cc in swftools through 20200710, resulting in a NULL pointer dereference, enabling attackers to cause Denial of Service.
The Impact of CVE-2021-39562
The vulnerability allows threat actors to launch Denial of Service attacks, impacting the availability of affected systems.
Technical Details of CVE-2021-39562
This section will dive into the technical aspects of CVE-2021-39562.
Vulnerability Description
A NULL pointer dereference exists in FileStream::makeSubStream() in Stream.cc in swftools through 20200710, leading to a potential Denial of Service attack.
Affected Systems and Versions
- Affected Vendor: n/a
- Affected Versions: n/a
Exploitation Mechanism
The vulnerability can be exploited by sending crafted input to the vulnerable function, triggering the NULL pointer dereference.
Mitigation and Prevention
Learn how to protect systems from CVE-2021-39562.
Immediate Steps to Take
- Update swftools to the latest version to mitigate the vulnerability.
- Implement proper input validation mechanisms to prevent malicious input.
Long-Term Security Practices
- Regularly monitor and audit application code for vulnerabilities.
- Educate developers on secure coding practices to reduce the likelihood of similar issues.
Patching and Updates
Stay informed about security updates for swftools and promptly apply patches to address known vulnerabilities.