Siemens SIMATIC CP 1242-7 V2 OpenVPN Configuration code injection

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Siemens SIMATIC CP 1242-7 V2, SIMATIC CP 1243-1, SIMATIC CP 1243-7 LTE EU, SIMATIC CP 1243-7 LTE US, SIMATIC CP 1243-8 IRC, SIMATIC CP 1542SP-1 IRC, SIMATIC CP 1543-1, SIMATIC CP 1543SP-1, SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL, SIPLUS ET 200SP CP 1543SP-1 ISEC, SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL, SIPLUS NET CP 1242-7 V2, SIPLUS NET CP 1543-1, SIPLUS S7-1200 CP 1243-1 and SIPLUS S7-1200 CP 1243-1 RAIL. Affected by this issue is some unknown functionality of the component OpenVPN Configuration Handler. This manipulation causes code injection. This vulnerability is handled as CVE-2022-34821. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Siemens SIMATIC CP 1242-7 V2, SIMATIC CP 1243-1, SIMATIC CP 1243-7 LTE EU, SIMATIC CP 1243-7 LTE US, SIMATIC CP 1243-8 IRC, SIMATIC CP 1542SP-1 IRC, SIMATIC CP 1543-1, SIMATIC CP 1543SP-1, SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL, SIPLUS ET 200SP CP 1543SP-1 ISEC, SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL, SIPLUS NET CP 1242-7 V2, SIPLUS NET CP 1543-1, SIPLUS S7-1200 CP 1243-1 and SIPLUS S7-1200 CP 1243-1 RAIL (SCADA Software) and classified as critical. Affected by this vulnerability is some unknown functionality of the component OpenVPN Configuration Handler. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions), SIMATIC CP 1243-1 (All versions), SIMATIC CP 1243-7 LTE EU (All versions), SIMATIC CP 1243-7 LTE US (All versions), SIMATIC CP 1243-8 IRC (All versions), SIMATIC CP 1542SP-1 IRC (All versions >= V2.0), SIMATIC CP 1543-1 (All versions < V3.0.22), SIMATIC CP 1543SP-1 (All versions >= V2.0), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (All versions >= V2.0), SIPLUS ET 200SP CP 1543SP-1 ISEC (All versions >= V2.0), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (All versions >= V2.0), SIPLUS NET CP 1242-7 V2 (All versions), SIPLUS NET CP 1543-1 (All versions < V3.0.22), SIPLUS S7-1200 CP 1243-1 (All versions), SIPLUS S7-1200 CP 1243-1 RAIL (All versions). By injecting code to specific configuration options for OpenVPN, an attacker could execute arbitrary code with elevated privileges.

The weakness was released 07/12/2022 as ssa-517377. It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is known as CVE-2022-34821 since 06/29/2022. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-37727). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 7.6
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Price Prediction: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/29/2022 🔍
07/12/2022 +13 days 🔍
07/12/2022 +0 days 🔍
06/13/2026 +1432 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-517377
Status: Confirmed

CVE: CVE-2022-34821 (🔍)
GCVE (CVE): GCVE-0-2022-34821
GCVE (VulDB): GCVE-100-203611
EUVD: 🔍

Entryinfo

Created: 07/12/2022 17:03
Updated: 06/13/2026 10:42
Changes: 07/12/2022 17:03 (40), 07/22/2022 06:44 (18), 01/14/2025 16:18 (37), 06/13/2026 10:42 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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