Siemens EN100 Ethernet Module improper authorization

CVSS Meta Temp Score
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CTI Interest Score
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5.1$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Siemens EN100 Ethernet Module. This issue affects some unknown processing. The manipulation results in improper authorization. This vulnerability was named CVE-2018-4839. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Siemens EN100 Ethernet Module (affected version not known). Affected is some unknown functionality. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in Siemens DIGSI 4 (All versions < V4.92), EN100 Ethernet module IEC 61850 variant (All versions < V4.30), EN100 Ethernet module PROFINET IO variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module DNP3 variant (All versions), EN100 Ethernet module IEC 104 variant (All versions), SIPROTEC Compact 7SJ80 (All versions < V4.77), SIPROTEC Compact 7SK80 (All versions < V4.77), SIPROTEC Compact 7SJ66 (All versions < V4.30), Other SIPROTEC Compact relays (All versions), Other SIPROTEC 4 relays (All versions). An attacker with local access to the engineering system or in a privileged network position and able to obtain certain network traffic could possibly reconstruct access authorization passwords.

The bug was discovered 03/08/2018. The weakness was presented 03/08/2018 (Website). The advisory is shared for download at cert-portal.siemens.com. This vulnerability is traded as CVE-2018-4839 since 01/02/2018. The exploitability is told to be difficult. It is possible to launch the attack remotely. A authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/17/2023). The MITRE ATT&CK project declares the attack technique as T1548.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-114229 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.0
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/02/2018 🔍
03/08/2018 +65 days 🔍
03/08/2018 +0 days 🔍
03/08/2018 +0 days 🔍
03/09/2018 +1 days 🔍
02/17/2023 +1806 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-203306
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-4839 (🔍)
GCVE (CVE): GCVE-0-2018-4839
GCVE (VulDB): GCVE-100-114228
See also: 🔍

Entryinfo

Created: 03/09/2018 08:00
Updated: 02/17/2023 14:34
Changes: 03/09/2018 08:00 (55), 01/11/2020 15:30 (2), 02/17/2023 14:34 (3)
Complete: 🔍
Cache ID: 216:CD8:103

Once again VulDB remains the best source for vulnerability data.

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