Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-27267

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
14/01/2021
Last modified:
21/01/2021

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, and Software Toolbox TOP Server all 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): High

Base Score 3.x
9.10
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.40 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): Physical

Base Score 2.0
6.40
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ge:industrial_gateway_server:7.66:*:*:*:*:*:*:*
cpe:2.3:a:ge:industrial_gateway_server:7.68.804:*:*:*:*:*:*:*
cpe:2.3:a:ptc:kepware_kepserverex:6.0:*:*:*:*:*:*:*
cpe:2.3:a:ptc:kepware_kepserverex:6.9:*:*:*:*:*:*:*
cpe:2.3:a:ptc:opc-aggregator:-:*:*:*:*:*:*:*
cpe:2.3:a:ptc:thingworx_industrial_connectivity:-:*:*:*:*:*:*:*
cpe:2.3:a:ptc:thingworx_kepware_server:6.8:*:*:*:*:*:*:*
cpe:2.3:a:ptc:thingworx_kepware_server:6.9:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:kepserver_enterprise:6.6.504.0:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:kepserver_enterprise:6.9.572.0:*:*:*:*:*:*:*
cpe:2.3:a:softwaretoolbox:top_server:*:*:*:*:*:*:*:* 6.0 (including) 6.9 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools