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CVE-2021-31485: ZDI-21-625

This vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. 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 DWF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12711.

CVE
#vulnerability#rce#buffer_overflow

June 2nd, 2021

OpenText Brava! Desktop DWF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability****ZDI-21-625
ZDI-CAN-12711

CVE ID

CVE-2021-31485

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 DWF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. 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

  • 2021-02-12 - Vulnerability reported to vendor
  • 2021-06-02 - Coordinated public release of advisory

CREDIT

rgod

BACK TO ADVISORIES

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