CVE-2021-31502 Use after free in Brava! Desktop

High 7.8 Published 15 Jun 2021 Updated 3 Aug 2024

Remote attackers can execute arbitrary code via malicious PDF files in OpenText Brava! Desktop due to improper object validation.

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-2021-31502?

CVE-2021-31502 is a high-severity use after free vulnerability in OpenText Brava! Desktop, published on 15 Jun 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 16.6.4.55. 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 validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-13673.

Weakness: CWE-416

Which versions are affected by CVE-2021-31502?

It affects 1 product.

Products include Opentext Brava\! Desktop.

How do I fix CVE-2021-31502?

No fix has been published for CVE-2021-31502 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2021-31502 being exploited?

There is no known exploitation of CVE-2021-31502 in the wild and no public exploit code.

Sources

Also known as GHSA-x8vw-c252-5hqw.