Advisory Details

August 9th, 2021

(0Day) Delta Industrial Automation DOPSoft DPS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-21-959
ZDI-CAN-13128

CVE ID CVE-2021-38402
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Delta Industrial Automation
AFFECTED PRODUCTS DOPSoft
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation DOPSoft. 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 DPS files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS

03/12/20 - ZDI reported the vulnerabilities to ICS-CERT
03/12/20 - ICS-CERT confirmed receipt of the reports
07/12/21 - ZDI requested an update
07/23/21 - ICS-CERT requested an extension
07/23/21 - ZDI notified ICS-CERT of the intention to publish these reports as 0-day advisories on 08/03/21


DISCLOSURE TIMELINE
  • 2021-03-12 - Vulnerability reported to vendor
  • 2021-08-09 - Coordinated public release of advisory
CREDIT kimiya
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