Advisory Details

October 16th, 2018

Laquis SCADA aq Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-18-1257
ZDI-CAN-6544

CVE ID CVE-2018-17911
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS LAquis
AFFECTED PRODUCTS SCADA
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of LAquis SCADA. 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 aq.exe. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this functionality to execute code in the context of the current process.

ADDITIONAL DETAILS LAquis has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-18-289-01
DISCLOSURE TIMELINE
  • 2018-06-29 - Vulnerability reported to vendor
  • 2018-10-16 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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