Advisory Details

April 2nd, 2019

LAquis SCADA ELS Users.name Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-19-307
ZDI-CAN-7374

CVE ID CVE-2019-6536
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 the handling of ELS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability 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-19-073-01
DISCLOSURE TIMELINE
  • 2018-10-16 - Vulnerability reported to vendor
  • 2019-04-02 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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