Siemens SCALANCE OpenSSL Out-of-bounds Read (CVE-2022-4203)

medium Tenable OT Security Plugin ID 501875

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. The read buffer overrun might result in a crash which could lead to a denial of service attack. In theory it could also result in the disclosure of private memory contents (such as private keys, or sensitive plaintext) although we are not aware of any working exploit leading to memory contents disclosure as of the time of release of this advisory. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.

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.

Plugin Details

Severity: Medium

ID: 501875

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 1/11/2024

Updated: 1/15/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2022-4203

CVSS v3

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.3

Vector: CVSS:3.0/AV:N/AC:L/PR:H/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_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_firmware:-, cpe:/o:siemens:scalance_xc206-2sfp_eec_firmware:-, cpe:/o:siemens:scalance_xc206-2sfp_g_firmware:-, cpe:/o:siemens:scalance_xc206-2sfp_g_eec_firmware:-, cpe:/o:siemens:scalance_xc208_firmware:-, cpe:/o:siemens:scalance_xc208eec_firmware:-, cpe:/o:siemens:scalance_xc208g_firmware:-, cpe:/o:siemens:scalance_xc208g_eec_firmware:-, cpe:/o:siemens:scalance_xc208g_poe_firmware:-, cpe:/o:siemens:scalance_xc216_firmware:-, cpe:/o:siemens:scalance_xc216_3g_poe_firmware:-, cpe:/o:siemens:scalance_xc216_4c_firmware:-, cpe:/o:siemens:scalance_xc216_4c_g_firmware:-, cpe:/o:siemens:scalance_xc216_4c_g_eec_firmware:-, cpe:/o:siemens:scalance_xc216eec_firmware:-, cpe:/o:siemens:scalance_xc224_firmware:-, cpe:/o:siemens:scalance_xc224_4c_g_firmware:-, cpe:/o:siemens:scalance_xc224_4c_g_eec_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_xp208_firmware:-, cpe:/o:siemens:scalance_xp208eec_firmware:-, cpe:/o:siemens:scalance_xp208poe_eec_firmware:-, cpe:/o:siemens:scalance_xp216_firmware:-, cpe:/o:siemens:scalance_xp216eec_firmware:-, cpe:/o:siemens:scalance_xp216poe_eec_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: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: 2/24/2023

Vulnerability Publication Date: 2/24/2023

Reference Information

CVE: CVE-2022-4203

CWE: 125

Detections

Analytics