CVE-2021-21808 : Security Advisory and Response
Discover the details of CVE-2021-21808, a high-severity memory corruption vulnerability in Accusoft ImageGear 19.9 that allows a heap buffer overflow with potential impacts on confidentiality, integrity, and availability.
A memory corruption vulnerability in Accusoft ImageGear 19.9 could allow an attacker to trigger a heap buffer overflow by using a specially crafted malicious file.
Understanding CVE-2021-21808
This CVE-2021-21808 involves a memory corruption vulnerability in the PNG png_palette_process function of Accusoft ImageGear 19.9, enabling a heap buffer overflow through a specifically crafted file.
What is CVE-2021-21808?
CVE-2021-21808 is a high-severity vulnerability in Accusoft ImageGear 19.9 that allows attackers to cause a heap buffer overflow by providing specially designed malicious inputs.
The Impact of CVE-2021-21808
With a CVSS base score of 8.1, this vulnerability has a significant impact on confidentiality, integrity, and availability, posing a high risk to affected systems.
Technical Details of CVE-2021-21808
This section outlines crucial technical aspects of CVE-2021-21808 to help understand its implications.
Vulnerability Description
The vulnerability exists in the PNG png_palette_process function of Accusoft ImageGear 19.9, leading to a heap buffer overflow upon exploitation using a malformed file.
Affected Systems and Versions
Accusoft ImageGear 19.9 is the affected version susceptible to this memory corruption issue, impacting systems that use this specific version.
Exploitation Mechanism
An attacker can exploit this vulnerability by providing specially crafted malformed files to the affected Accusoft ImageGear 19.9, triggering the heap buffer overflow.
Mitigation and Prevention
To safeguard systems from CVE-2021-21808, immediate steps need to be taken along with long-term security practices and appropriate patching.
Immediate Steps to Take
Apply security patches, restrict access to vulnerable systems, and be cautious of file inputs to mitigate the risk of exploitation.
Long-Term Security Practices
Implement secure coding practices, conduct regular security assessments, and stay updated on vulnerabilities to enhance overall system security.
Patching and Updates
Regularly update Accusoft ImageGear to the latest version to ensure patches for vulnerabilities like CVE-2021-21808 are applied.