CVE-2021-31504 : Exploit Details and Defense Strategies

A vulnerability in OpenText Brava! Desktop Build 16.6.3.84 allows remote attackers to execute arbitrary code with high impact.

Understanding CVE-2021-31504

This CVE involves a flaw in OpenText Brava! Desktop that can be exploited by visiting a malicious page or opening a malicious file.

What is CVE-2021-31504?

CVE-2021-31504 is a vulnerability in OpenText Brava! Desktop Build 16.6.3.84 that enables remote attackers to execute arbitrary code. The flaw originates from improper validation in the parsing of PDF files.

The Impact of CVE-2021-31504

The vulnerability has a CVSS base score of 7.8 (High) with a requirement of user interaction. Attackers can exploit this flaw to execute code with high confidentiality, integrity, and availability impacts.

Technical Details of CVE-2021-31504

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw in OpenText Brava! Desktop Build 16.6.3.84 arises from inadequate validation of a user-supplied value before dereferencing it as a pointer. Attackers can use this to execute code within the current process.

Affected Systems and Versions

The vulnerability affects OpenText Brava! Desktop Build 16.6.3.84 (package 16.6.3.134).

Exploitation Mechanism

To exploit this vulnerability, user interaction is required. Attackers must entice the target to visit a malicious webpage or open a malicious file.

Mitigation and Prevention

To secure systems against CVE-2021-31504, consider the following measures.

Immediate Steps to Take

Users should exercise caution when interacting with unknown or suspicious files and websites. Applying security updates promptly is crucial.

Long-Term Security Practices

Implementing robust input validation mechanisms and conducting regular security audits can enhance system resilience.

Patching and Updates

It is essential to stay informed about security patches released by OpenText for Brava! Desktop and apply them promptly.