CVE-2021-21101 Explained : Impact and Mitigation
Learn about CVE-2021-21101, a critical Out-of-bounds Write vulnerability in Adobe Illustrator versions 25.2 and earlier that could lead to remote code execution. Take immediate steps to mitigate the risk.
Adobe Illustrator version 25.2 and earlier is affected by an Out-of-bounds Write vulnerability when parsing specially crafted files. This vulnerability could allow an unauthenticated attacker to execute arbitrary code in the context of the current user.
Understanding CVE-2021-21101
This CVE describes a critical vulnerability in Adobe Illustrator that could be exploited by attackers for remote code execution.
What is CVE-2021-21101?
CVE-2021-21101 is an Out-of-bounds Write vulnerability in Adobe Illustrator versions 25.2 and earlier. It allows attackers to execute arbitrary code by tricking users into opening a malicious file.
The Impact of CVE-2021-21101
The impact of this vulnerability is classified as high, with a base score of 8.8 according to CVSS v3.1 metrics. It could lead to unauthorized remote code execution.
Technical Details of CVE-2021-21101
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises from Adobe Illustrator's TTF font parsing, where an attacker can exploit the application's handling of font files to execute arbitrary code.
Affected Systems and Versions
Adobe Illustrator versions 25.2 and earlier are affected by this vulnerability. Users of these versions are at risk of exploitation.
Exploitation Mechanism
To exploit CVE-2021-21101, an attacker must craft a malicious file and lure the victim into opening it. Once opened, the attacker can execute arbitrary code remotely.
Mitigation and Prevention
It is crucial to take immediate steps to protect systems from this security threat.
Immediate Steps to Take
- Update Adobe Illustrator to the latest version to patch the vulnerability.
- Be cautious when opening files from untrusted sources to prevent exploitation.
Long-Term Security Practices
- Regularly update software to ensure the latest security patches are applied.
- Educate users on the importance of cybersecurity hygiene to minimize risks.
Patching and Updates
Stay informed about security advisories from Adobe and promptly apply patches to secure systems against known vulnerabilities.