Advisory Details

April 10th, 2014

Advantech WebAccess webvact.ocx GotoCmd Stack Buffer Overflow Remote Code Execution Vulnerability

ZDI-14-072
ZDI-CAN-2010

CVE ID CVE-2014-0765
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS Advantech WebAccess
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Advantech WebAccess. 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 webvact.ocx ActiveX Control. The control does not check the length of an attacker-supplied GotoCmd string before copying it into a fixed length buffer on the stack. This allows an attacker to execute arbitrary code in the context of the browser process.

ADDITIONAL DETAILS Advantech has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-14-079-03
DISCLOSURE TIMELINE
  • 2014-01-05 - Vulnerability reported to vendor
  • 2014-04-10 - Coordinated public release of advisory
CREDIT Tom Gallagher
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