CVE-2021-31504 Null dereference in Brava! Desktop

High 7.8 Published 3 Aug 2021 Updated 3 Aug 2024

Remote attackers can execute arbitrary code by tricking users into opening malicious PDF files in OpenText Brava! Desktop.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-31504?

CVE-2021-31504 is a high-severity vulnerability in OpenText Brava! Desktop, published on 3 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop Build 16.6.3.84 (package 16.6.3.134). User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PDF files. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12691.

Weakness: CWE-822

Which versions are affected by CVE-2021-31504?

It affects 1 product.

Products include Opentext Brava\! Desktop.

How do I fix CVE-2021-31504?

No fix has been published for CVE-2021-31504 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-31504 being exploited?

There is no known exploitation of CVE-2021-31504 in the wild and no public exploit code.

Sources

Also known as GHSA-m8pr-x6wc-r486.