Advisory Details

February 28th, 2017

VIPA Automation WinPLC7 recv Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-17-112
ZDI-CAN-3721

CVE ID CVE-2017-5177
CVSS SCORE 6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS VIPA
AFFECTED PRODUCTS VIPA Automation WinPLC7
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of VIPA Automation WinPLC7. Authentication is not required to exploit this vulnerability.

The specific flaw exists within processing of TCP packets. The software fails to validate the length field within the packet before copying it to a stack buffer. An attacker can leverage this vulnerability to execute code in the context of the process.
ADDITIONAL DETAILS VIPA has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-17-054-01
DISCLOSURE TIMELINE
  • 2016-04-28 - Vulnerability reported to vendor
  • 2017-02-28 - Coordinated public release of advisory
CREDIT Ariele Caltabiano (kimiya)
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