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CVE-2019-6764: ZDI-19-438

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.1.16828. 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 processing of XFA Template objects. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-7972.

CVE
#vulnerability#php#rce

April 29th, 2019

Foxit Reader XFA Template Out-Of-Bounds Write Remote Code Execution Vulnerability****ZDI-19-438
ZDI-CAN-7972

CVE ID

CVE-2019-6764

CVSS SCORE

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

AFFECTED VENDORS

Foxit

AFFECTED PRODUCTS

Reader

VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader. 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 processing of XFA Template objects. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS

Foxit has issued an update to correct this vulnerability. More details can be found at:
https://www.foxitsoftware.com/support/security-bulletins.php

DISCLOSURE TIMELINE

  • 2019-03-01 - Vulnerability reported to vendor
  • 2019-04-29 - Coordinated public release of advisory

CREDIT

hungtt28 of Viettel Cyber Security

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