Vulnerability CVE-2020-27265
Published: 2021-01-14

Description:
KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All versions, Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server: v7.68.804 and v7.66, Software Toolbox TOP Server: All 6.x versions are vulnerable to a stack-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and remotely execute code.

Type:

CWE-787

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Softwaretoolbox -> Top server 
Rockwellautomation -> Kepserver enterprise 
PTC -> Kepware kepserverex 
PTC -> Opc-aggregator 
PTC -> Thingworx industrial connectivity 
PTC -> Thingworx kepware server 
GE -> Industrial gateway server 

 References:
https://us-cert.cisa.gov/ics/advisories/icsa-20-352-02
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