Technical Advisory

Through sharp, technical and insightful analysis, the Payatu Team is constantly on the lookout for vulnerabilities and threats. This section exhibits a few of our findings.

Technical Advisory

Through sharp, technical and insightful analysis, the Payatu Team is constantly on the lookout for vulnerabilities and threats. This section exhibits a few of our findings.

Foxit Reader PDF Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

Vulnerability

Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

Vulnerability Description

This vulnerability allows remote attackers to disclose sensitive information 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 parsing of PDF files. The issue results from the lack of proper validation of user-supplied data which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.

CVE ID

CVE-2017-10943

Vendor

http://www.foxitsoftware.com/

Products

  • Foxit Reader 8.3.1 and prior
  • Foxit PhantomPDF 8.3.1 and prior

Disclosure Timeline

  1. 18 May 2017 – Reported to vendor
  2. 07 July 2017 – Coordinated public release of advisory

Credits

Ashfaq Ansari – Project Srishti

ZDI

http://www.zerodayinitiative.com/advisories/ZDI-17-456/

Vendor Advisory

https://www.foxitsoftware.com/support/security-bulletins.php

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