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CVE-2019-6756: ZDI-19-430

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit PhantomPDF 9.4.0.16811. 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 HTML 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 in conjunction with other vulnerabilities to execute code in the context of the current process. Was ZDI-CAN-7769.

CVE
#vulnerability#php#pdf#zero_day

April 29th, 2019

Foxit PhantomPDF net HTML File Parsing Use-After-Free Information Disclosure Vulnerability****ZDI-19-430
ZDI-CAN-7769

CVE ID

CVE-2019-6756

CVSS SCORE

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

AFFECTED VENDORS

Foxit

AFFECTED PRODUCTS

PhantomPDF

VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit PhantomPDF. 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 HTML 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 in conjunction with other vulnerabilities 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

  • 2019-01-09 - Vulnerability reported to vendor
  • 2019-04-29 - Coordinated public release of advisory

CREDIT

Mat Powell of Trend Micro Zero Day Initiative

BACK TO ADVISORIES

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