VDB-122115 · CVE-2018-11452 · ssa-325546

EN100 Ethernet Module Service Port TCP 102 Crafted Packet input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in EN100 Ethernet Module. It has been rated as problematic. This issue affects some unknown processing of the component Service Port TCP 102. Performing a manipulation as part of Crafted Packet results in input validation. This vulnerability is known as CVE-2018-11452. Remote exploitation of the attack is possible. No exploit is available. It is suggested to use restrictive firewalling.

Detailsinfo

A vulnerability, which was classified as problematic, was found in EN100 Ethernet Module (version unknown). This affects an unknown function of the component Service Port TCP 102. The manipulation as part of a Crafted Packet leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

A vulnerability has been identified in Firmware variant IEC 61850 for EN100 Ethernet module (All versions < V4.33), Firmware variant PROFINET IO for EN100 Ethernet module (All versions), Firmware variant Modbus TCP for EN100 Ethernet module (All versions), Firmware variant DNP3 TCP for EN100 Ethernet module (All versions), Firmware variant IEC104 for EN100 Ethernet module (All versions). Specially crafted packets to port 102/tcp could cause a denial-of-service condition in the EN100 communication module if oscillographs are running. A manual restart is required to recover the EN100 module functionality. Successful exploitation requires an attacker with network access to send multiple packets to the EN100 module. As a precondition the IEC 61850-MMS communication needs to be activated on the affected EN100 modules. No user interaction or privileges are required to exploit the security vulnerability. The vulnerability could allow causing a Denial-of-Service condition of the network functionality of the device, compromising the availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known.

The bug was discovered 12/13/2018. The weakness was published 07/23/2018 (Website). It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2018-11452 since 05/25/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

It is possible to mitigate the weakness by firewalling tcp/102.

Similar entry is available at VDB-122114. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

EN100 Ethernet Module

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

05/25/2018 🔍
07/23/2018 +59 days 🔍
07/23/2018 +0 days 🔍
07/24/2018 +1 days 🔍
12/13/2018 +142 days 🔍
04/25/2023 +1594 days 🔍

Sourcesinfo

Advisory: ssa-325546
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-11452 (🔍)
GCVE (CVE): GCVE-0-2018-11452
GCVE (VulDB): GCVE-100-122115
SecurityFocus: 106221

See also: 🔍

Entryinfo

Created: 07/24/2018 09:03
Updated: 04/25/2023 13:46
Changes: 07/24/2018 09:03 (57), 03/09/2020 17:45 (2), 04/25/2023 13:46 (5)
Complete: 🔍
Cache ID: 216::103

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