Siemens CP-8031 MASTER MODULE/CP-8050 MASTER MODULE prior 05.11 SSH hard-coded credentials

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Siemens CP-8031 MASTER MODULE and CP-8050 MASTER MODULE. The impacted element is an unknown function of the component SSH. Performing a manipulation results in hard-coded credentials. This vulnerability is reported as CVE-2023-36380. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical has been found in Siemens CP-8031 MASTER MODULE and CP-8050 MASTER MODULE. This affects some unknown functionality of the component SSH. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. CWE is classifying the issue as CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05.11 (only with activated debug support)), CP-8050 MASTER MODULE (All versions < CPCI85 V05.11 (only with activated debug support)). The affected devices contain a hard-coded ID in the SSH `authorized_keys` configuration file. An attacker with knowledge of the corresponding private key could login to the device via SSH. Only devices with activated debug support are affected.

The weakness was disclosed 10/10/2023 as ssa-134651. The advisory is shared at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2023-36380 since 06/21/2023. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/28/2023). MITRE ATT&CK project uses the attack technique T1110.001 for this issue.

Upgrading to version 05.11 eliminates this vulnerability.

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Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 9.0

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Siemens AG): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Hard-coded credentials
CWE: CWE-798 / CWE-259 / CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CP-8031 MASTER MODULE/CP-8050 MASTER MODULE 05.11

Timelineinfo

06/21/2023 🔍
10/10/2023 +111 days 🔍
10/10/2023 +0 days 🔍
10/28/2023 +18 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-134651
Status: Confirmed

CVE: CVE-2023-36380 (🔍)
GCVE (CVE): GCVE-0-2023-36380
GCVE (VulDB): GCVE-100-241677

Entryinfo

Created: 10/10/2023 13:43
Updated: 10/28/2023 14:00
Changes: 10/10/2023 13:43 (50), 10/28/2023 14:00 (11)
Complete: 🔍
Cache ID: 216::103

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