CVE-2021-31488

Vulnerability

This vulnerability affects OpenText Brava! Desktop version 16.6.3.84. It exists in the parsing of DWF files, where improper validation of user-supplied data can cause a write past the end of an allocated buffer. This memory corruption can be triggered when the user opens a malicious DWF file or visits a malicious page that loads such a file [1].

Exploitation

Exploitation requires user interaction: the victim must either open a specially crafted DWF file or navigate to a malicious webpage that triggers the vulnerability. No authentication or special privileges are needed; the attacker only needs to deliver the malicious file to the target [1].

Impact

Successful exploitation allows an attacker to execute arbitrary code in the context of the current process. This can lead to full compromise of the affected system, including potential data disclosure, modification, or further attacks [1].

Mitigation

As of the publication of the referenced advisory, no patch or mitigation details have been disclosed. Users should monitor OpenText for security updates and consider limiting exposure to untrusted DWF files until a fix is available [1].