Siemens SCALANCE Allocation of Resources Without Limits or Throttling (CVE-2022-36324)

high Tenable OT Security Plugin ID 500773

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Affected devices do not properly handle the renegotiation of SSL/TLS parameters. This could allow an unauthenticated remote attacker to bypass the TCP brute force prevention and lead to a denial of service condition for the duration of the attack.

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

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Siemens has provided software patches for the following vulnerable products:

- For product versions prior to V7.1.2 update to V7.1.2 or later
- For product versions prior to V2.3.1 update to V2.3.1 or later

Siemens has identified the following specific workarounds and mitigations to reduce the risk:

- Apply the principle of least privileges for accounts configured on the affected devices
- Restrict network access in affected systems to ports 80/TCP and 443/TCP to trusted IP addresses and personal only.

As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends users configure the environment according to the Siemens operational guidelines for industrial security and follow the recommendations in the product manuals.

For additional information, please refer to Siemens Security Advisory SSA-710008.

Plugin Details

Severity: High

ID: 500773

Version: 1.10

Type: remote

Family: Tenable.ot

Published: 1/25/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2022-36324

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:siemens:scalance_w734-1_rj45_firmware, cpe:/o:siemens:scalance_w738-1_m12_firmware, cpe:/o:siemens:scalance_w748-1_m12_firmware, cpe:/o:siemens:scalance_w748-1_rj45_firmware, cpe:/o:siemens:scalance_w761-1_rj45_firmware, cpe:/o:siemens:scalance_w774-1_m12_eec_firmware, cpe:/o:siemens:scalance_w774-1_rj45_firmware, cpe:/o:siemens:scalance_w778-1_m12_eec_firmware, cpe:/o:siemens:scalance_w778-1_rj45_firmware, cpe:/o:siemens:scalance_w786-1_rj45_firmware, cpe:/o:siemens:scalance_w786-2_rj45_firmware, cpe:/o:siemens:scalance_w786-2_sfp_firmware, cpe:/o:siemens:scalance_w786-2ia_rj45_firmware, cpe:/o:siemens:scalance_w788-1_m12_firmware, cpe:/o:siemens:scalance_w788-1_rj45_firmware, cpe:/o:siemens:scalance_w788-2_m12_firmware, cpe:/o:siemens:scalance_w788-2_m12_eec_firmware, cpe:/o:siemens:scalance_w788-2_rj45_firmware, cpe:/o:siemens:scalance_w1748-1_m12_firmware, cpe:/o:siemens:scalance_w1788-1_m12_firmware, cpe:/o:siemens:scalance_w1788-2_eec_m12_firmware, cpe:/o:siemens:scalance_w1788-2_m12_firmware, cpe:/o:siemens:scalance_w1788-2ia_m12_firmware, cpe:/o:siemens:scalance_wam763-1_firmware, cpe:/o:siemens:scalance_wam766-1_firmware, cpe:/o:siemens:scalance_wam766-1_eec_firmware, cpe:/o:siemens:scalance_xm408-8c_l3_firmware, cpe:/o:siemens:scalance_xm416-4c_firmware, cpe:/o:siemens:scalance_xm416-4c_l3_firmware, cpe:/o:siemens:scalance_xp208_%28eip%29_firmware, cpe:/o:siemens:scalance_xp208_firmware, cpe:/o:siemens:scalance_xp208eec_firmware, cpe:/o:siemens:scalance_xp208poe_eec_firmware, cpe:/o:siemens:scalance_xp216_%28eip%29_firmware, cpe:/o:siemens:scalance_xp216_firmware, cpe:/o:siemens:scalance_xp216eec_firmware, cpe:/o:siemens:scalance_xp216poe_eec_firmware, cpe:/o:siemens:scalance_xr324-12m_firmware, cpe:/o:siemens:scalance_xr324-12m_ts_firmware, cpe:/o:siemens:scalance_xr324-4m_eec_firmware, cpe:/o:siemens:ruggedcom_rm1224_firmware, cpe:/o:siemens:scalance_m804pb_firmware, cpe:/o:siemens:scalance_m812-1_firmware, cpe:/o:siemens:scalance_m816-1_firmware, cpe:/o:siemens:scalance_m826-2_firmware, cpe:/o:siemens:scalance_m874-2_firmware, cpe:/o:siemens:scalance_m874-3_firmware, cpe:/o:siemens:scalance_m876-3_firmware, cpe:/o:siemens:scalance_m876-4_firmware, cpe:/o:siemens:scalance_mum853-1_firmware, cpe:/o:siemens:scalance_mum856-1_firmware, cpe:/o:siemens:scalance_s615_firmware, cpe:/o:siemens:scalance_sc622-2c_firmware, cpe:/o:siemens:scalance_sc626-2c_firmware, cpe:/o:siemens:scalance_sc632-2c_firmware, cpe:/o:siemens:scalance_sc636-2c_firmware, cpe:/o:siemens:scalance_sc642-2c_firmware, cpe:/o:siemens:scalance_sc646-2c_firmware, cpe:/o:siemens:scalance_w721-1_rj45_firmware, cpe:/o:siemens:scalance_w722-1_rj45_firmware, cpe:/o:siemens:scalance_wum763-1_firmware, cpe:/o:siemens:scalance_wum766-1_eec_firmware, cpe:/o:siemens:scalance_xb205-3_firmware, cpe:/o:siemens:scalance_xb205-3ld_firmware, cpe:/o:siemens:scalance_xb208_firmware, cpe:/o:siemens:scalance_xb213-3_firmware, cpe:/o:siemens:scalance_xb213-3ld_firmware, cpe:/o:siemens:scalance_xb216_firmware, cpe:/o:siemens:scalance_xc206-2_firmware, cpe:/o:siemens:scalance_xc206-2g_poe_firmware, cpe:/o:siemens:scalance_xc206-2g_poe_eec_firmware, cpe:/o:siemens:scalance_xc206-2sfp_eec_firmware, cpe:/o:siemens:scalance_xc206-2sfp_g_%28e%2fip%29_firmware, cpe:/o:siemens:scalance_xc206-2sfp_g_eec_firmware, cpe:/o:siemens:scalance_xc206-2sfp_g_firmware, cpe:/o:siemens:scalance_xc208_firmware, cpe:/o:siemens:scalance_xc208eec_firmware, cpe:/o:siemens:scalance_xc208g_%28e%2fip%29_firmware, cpe:/o:siemens:scalance_xc208g_eec_firmware, cpe:/o:siemens:scalance_xc208g_firmware, cpe:/o:siemens:scalance_xc208g_poe_firmware, cpe:/o:siemens:scalance_xc216-4c_firmware, cpe:/o:siemens:scalance_xc216-4c_g_%28e%2fip%29_firmware, cpe:/o:siemens:scalance_xc216-4c_g_eec_firmware, cpe:/o:siemens:scalance_xc216-4c_g_firmware, cpe:/o:siemens:scalance_xc216_firmware, cpe:/o:siemens:scalance_xc216eec_firmware, cpe:/o:siemens:scalance_xc224-4c_g_%28e%2fip%29_firmware, cpe:/o:siemens:scalance_xc224-4c_g_firmware, cpe:/o:siemens:scalance_xc224-4c_g_eec_firmware, cpe:/o:siemens:scalance_xc224_firmware, cpe:/o:siemens:scalance_xf204_firmware, cpe:/o:siemens:scalance_xf204_dna_firmware, cpe:/o:siemens:scalance_xf204-2ba_firmware, cpe:/o:siemens:scalance_xf204-2ba_dna_firmware, cpe:/o:siemens:scalance_xm408-4c_firmware, cpe:/o:siemens:scalance_xm408-4c_l3_firmware, cpe:/o:siemens:scalance_xm408-8c_firmware, cpe:/o:siemens:scalance_xr324-4m_poe_firmware, cpe:/o:siemens:scalance_xr324-4m_poe_ts_firmware, cpe:/o:siemens:scalance_xr324wg_firmware, cpe:/o:siemens:scalance_xr326-2c_poe_wg_firmware, cpe:/o:siemens:scalance_xr328-4c_wg_firmware, cpe:/o:siemens:scalance_xr524-8c_firmware, cpe:/o:siemens:scalance_xr524-8c_l3_firmware, cpe:/h:siemens:scalance_xr526-8c_l3_firmware, cpe:/o:siemens:scalance_xr526-8c_firmware, cpe:/o:siemens:scalance_xr528-6m_firmware, cpe:/o:siemens:scalance_xr528-6m_l3_firmware, cpe:/o:siemens:scalance_xr528_firmware, cpe:/o:siemens:scalance_xr552-12_firmware, cpe:/o:siemens:scalance_xr552-12m_l3_firmware, cpe:/o:siemens:scalance_xr552-12m_firmware, cpe:/o:siemens:scalance_xr552_firmware, cpe:/o:siemens:siplus_net_scalance_xc206-2_firmware, cpe:/o:siemens:siplus_net_scalance_xc206-2sfp_firmware, cpe:/o:siemens:siplus_net_scalance_xc208_firmware, cpe:/o:siemens:siplus_net_scalance_xc216-4c_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 8/10/2022

Vulnerability Publication Date: 8/10/2022

Reference Information

CVE: CVE-2022-36324

CWE: 770

Detections

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