Rockwell Automation RSLinx Classic <= 4.10.00 Stack-Based Buffer Overflow

critical Nessus Network Monitor Plugin ID 720260
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

Rockwell Automation RSLinx Classic is affected by a stack-based buffer overflow vulnerability.

Description

An input validation issue (CWE-121) exists in a .dll file of RSLinx Classic where the data in a Forward Open service request is passed to a fixed size buffer, allowing an attacker to exploit a stack-based buffer overflow condition.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01,https://www.tenable.com/security/research/tra-2019-11

Plugin Details

Severity: Critical

ID: 720260

Family: SCADA

Published: 6/4/2019

Updated: 9/30/2019

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 3/5/2019

Vulnerability Publication Date: 3/5/2019

Reference Information

CVE: CVE-2019-6553