CVE-2020-21598 : Security Advisory and Response
Discover the impact of CVE-2020-21598, a heap buffer overflow vulnerability in libde265 v1.0.4. Learn about affected systems, exploitation methods, and mitigation steps to secure your environment.
CVE-2020-21598 is a vulnerability found in libde265 v1.0.4, involving a heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function. This vulnerability can be exploited through a specially crafted file.
Understanding CVE-2020-21598
This section provides insights into the nature and impact of CVE-2020-21598.
What is CVE-2020-21598?
CVE-2020-21598 is a heap buffer overflow vulnerability in libde265 v1.0.4, specifically in the ff_hevc_put_unweighted_pred_8_sse function. Attackers can leverage this flaw by using a maliciously crafted file to trigger the overflow.
The Impact of CVE-2020-21598
The vulnerability allows attackers to execute arbitrary code or cause a denial of service (DoS) condition on the affected system, potentially leading to system compromise or disruption.
Technical Details of CVE-2020-21598
This section delves into the technical aspects of CVE-2020-21598.
Vulnerability Description
The vulnerability arises from a heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function within libde265 v1.0.4, enabling attackers to exploit the issue through a specially crafted file.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions Affected: n/a (all versions affected)
Exploitation Mechanism
The vulnerability can be exploited by an attacker through the use of a specifically crafted file, triggering the heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function.
Mitigation and Prevention
Learn how to protect your systems from CVE-2020-21598.
Immediate Steps to Take
- Apply the latest security updates provided by the vendor.
- Implement proper input validation to prevent malicious file execution.
- Consider restricting access to vulnerable systems.
Long-Term Security Practices
- Regularly update software and libraries to patch known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address weaknesses.
- Educate users on safe browsing habits and the risks of opening untrusted files.
Patching and Updates
Ensure that you regularly check for security advisories and updates from the vendor to apply patches that address CVE-2020-21598.