CVE-2021-21949 : Exploit Details and Defense Strategies
Learn about CVE-2021-21949, an improper array index validation flaw in Accusoft ImageGear 19.10 allowing code execution. Impact, technical details, and mitigation strategies included.
Accusoft ImageGear 19.10 is prone to an improper array index validation vulnerability, allowing attackers to execute arbitrary code by providing a specially-crafted malicious file. This CVE was published on February 23, 2022, with a CVSS base score of 9.8.
Understanding CVE-2021-21949
This section delves into the specifics of the vulnerability and its potential impact.
What is CVE-2021-21949?
CVE-2021-21949 is an improper array index validation flaw within the JPEG-JFIF Scan header parser functionality of Accusoft ImageGear 19.10. It enables threat actors to trigger an out-of-bounds write and execute arbitrary code by exploiting a specially-crafted file.
The Impact of CVE-2021-21949
With a CVSS base score of 9.8, this critical vulnerability poses a significant risk to confidentiality, integrity, and availability. It requires no user interaction and has a low attack complexity, amplifying its severity.
Technical Details of CVE-2021-21949
Explore the technical aspects and implications of CVE-2021-21949.
Vulnerability Description
The vulnerability stems from the improper validation of array indices in the JPEG-JFIF Scan header parser of Accusoft ImageGear 19.10, facilitating an out-of-bounds write and potential code execution.
Affected Systems and Versions
Accusoft ImageGear 19.10 is confirmed to be impacted by this vulnerability, emphasizing the importance of immediate action to secure systems running this version.
Exploitation Mechanism
By crafting a malicious file, threat actors can exploit this vulnerability to execute arbitrary code, emphasizing the critical need for mitigation.
Mitigation and Prevention
Discover effective strategies to mitigate the risks associated with CVE-2021-21949.
Immediate Steps to Take
Deploy security patches, implement network segmentation, and monitor for any suspicious activities to prevent exploitation of this critical vulnerability.
Long-Term Security Practices
Regularly update and patch software, conduct security assessments, and educate users on best practices to enhance overall cybersecurity posture.
Patching and Updates
Stay informed about security advisories from Accusoft and apply relevant patches promptly to protect systems from potential attacks.