CVE-2021-31492 : Vulnerability Insights and Analysis
CVE-2021-31492 impacts OpenText Brava! Desktop 16.6.3.84, allowing remote attackers to execute arbitrary code. Learn about the vulnerability, its impact, and mitigation steps.
OpenText Brava! Desktop version 16.6.3.84 is affected by a vulnerability that allows remote attackers to execute arbitrary code. User interaction is required for exploitation through visiting a malicious page or opening a malicious file.
Understanding CVE-2021-31492
This CVE involves a flaw in the parsing of DWF files in OpenText Brava! Desktop, leading to unauthorized code execution.
What is CVE-2021-31492?
CVE-2021-31492 is a vulnerability in OpenText Brava! Desktop 16.6.3.84 that enables remote attackers to execute arbitrary code by manipulating user-supplied data when processing DWF files, resulting in a buffer overflow.
The Impact of CVE-2021-31492
With a CVSS base score of 7.8 (High severity), this vulnerability can have a significant impact on confidentiality, integrity, and availability as attackers can exploit it to run malicious code within the context of the current process.
Technical Details of CVE-2021-31492
The vulnerability in OpenText Brava! Desktop 16.6.3.84 is classified as an Out-of-bounds Write (CWE-787). It requires no special privileges but demands user interaction to execute the attack locally.
Vulnerability Description
The flaw arises from improper validation of user-supplied data when handling DWF files, allowing attackers to overwrite allocated buffer space.
Affected Systems and Versions
- Product: Brava! Desktop
- Vendor: OpenText
- Version: 16.6.3.84
Exploitation Mechanism
To exploit this vulnerability, attackers must entice a user to interact with a malicious page or file, triggering the code execution within the current process.
Mitigation and Prevention
Protecting systems from CVE-2021-31492 requires immediate actions and ongoing security practices.
Immediate Steps to Take
- Update Brava! Desktop to a patched version that addresses the vulnerability.
- Exercise caution when interacting with unknown or untrusted files or links.
Long-Term Security Practices
- Implement strong endpoint security measures to detect and prevent similar attacks.
- Regularly educate users on safe browsing habits and cybersecurity best practices.
Patching and Updates
Stay informed about security updates from OpenText and promptly apply patches to eliminate known vulnerabilities.