OpenText Brava! Desktop PDF File Parsing Use-After-Free Remote Code Execution Vulnerability

June 2nd, 2021
ZDI-21-642 ZDI-CAN-13673

CVE ID

CVE-2021-31502

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

OpenText

Affected Products

Brava! Desktop

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop. 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.

Additional Details

Fixed in version 6.6.4.114


Disclosure Timeline

  • 2021-04-16 - Vulnerability reported to vendor
  • 2021-06-02 - Coordinated public release of advisory

Credit

Michael DePlante (@izobashi) of Trend Micro's Zero Day Initiative

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