Siemens SCALANCE OpenSSL NULL Pointer Dereference (CVE-2023-0217)

high Tenable OT Security Plugin ID 501874

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An invalid pointer dereference on read can be triggered when an application tries to check a malformed DSA public key by the EVP_PKEY_public_check() function. This will most likely lead to an application crash. This function can be called on public keys supplied from untrusted sources which could allow an attacker to cause a denial of service attack. The TLS implementation in OpenSSL does not call this function but applications might call the function if there are additional security requirements imposed by standards such as FIPS 140-3.

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: High

ID: 501874

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: 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-2023-0217

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_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: 2/8/2023

Vulnerability Publication Date: 2/8/2023

Reference Information

CVE: CVE-2023-0217

CWE: 476

Detections

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