Detections
Analytics

Schneider PowerLogic Improper Authentication (CVE-2021-22764)

medium Tenable OT Security Plugin ID 500559

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A CWE-287: Improper Authentication vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (see security notification for version infromation) that could cause loss of connectivity to the device via Modbus TCP protocol when an attacker sends a specially crafted HTTP request.

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

http://www.nessus.org/u?20360c58

Plugin Details

Severity: Medium

ID: 500559

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 2/21/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-22764

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: cpe:/o:schneider-electric:powerlogic_pm5560_firmware, cpe:/o:schneider-electric:powerlogic_pm5561_firmware, cpe:/o:schneider-electric:powerlogic_pm5562_firmware, cpe:/o:schneider-electric:powerlogic_pm5563_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 6/11/2021

Vulnerability Publication Date: 6/11/2021

Reference Information

CVE: CVE-2021-22764

CWE: 287