Advisory Details

April 20th, 2018

Foxit Reader TIFF Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-18-333
ZDI-CAN-5473

CVE ID CVE-2018-9949
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
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 parsing of TIFF 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 under the context of the current process.

VENDOR RESPONSE 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
  • 2018-01-12 - Vulnerability reported to vendor
  • 2018-04-20 - Coordinated public release of advisory
  • 2018-04-20 - Advisory Updated
CREDIT willJ of Tencent PC Manager
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