Siemens SIMATIC S7-400/SIMATIC S7-400H data processing

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Siemens SIMATIC S7-400 and SIMATIC S7-400H. This affects an unknown part. This manipulation causes data processing. This vulnerability appears as CVE-2018-4850. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Siemens SIMATIC S7-400 and SIMATIC S7-400H (SCADA Software) (version now known) and classified as problematic. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a data processing vulnerability. The CWE definition for the vulnerability is CWE-19. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2), SIMATIC S7-400H CPU hardware version 4.5 and below (All versions). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart.

The bug was discovered 05/15/2018. The weakness was presented 05/16/2018 (Website). It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is known as CVE-2018-4850 since 01/02/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/13/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 104217†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Data processing
CWE: CWE-19
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 🔍
05/15/2018 +133 days 🔍
05/15/2018 +0 days 🔍
05/16/2018 +0 days 🔍
05/16/2018 +0 days 🔍
05/16/2018 +0 days 🔍
03/13/2023 +1762 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-914382
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-4850 (🔍)
GCVE (CVE): GCVE-0-2018-4850
GCVE (VulDB): GCVE-100-117823
SecurityFocus: 104217 - Siemens SIMATIC S7-400 CPU CVE-2018-4850 Denial of Service Vulnerability

Entryinfo

Created: 05/16/2018 22:27
Updated: 03/13/2023 15:52
Changes: 05/16/2018 22:27 (57), 02/06/2020 08:48 (4), 03/13/2023 15:52 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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