Siemens SIMATIC STEP 7 Safety V18 prior 18 Update 2 deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Siemens SIMATIC STEP 7 Safety V18. This affects an unknown part. Executing a manipulation can lead to deserialization. This vulnerability is handled as CVE-2023-32737. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Siemens SIMATIC STEP 7 Safety V18. It has been declared as critical. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions < V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.

The advisory is available at cert-portal.siemens.com. This vulnerability was named CVE-2023-32737 since 05/12/2023. The exploitation appears to be difficult. The attack can be initiated remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/09/2024).

Upgrading to version 18 Update 2 eliminates this vulnerability.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

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

VulDB Base Score: 6.6
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.3
CNA Vector (siemens): 🔍

CVSSv2info

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

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
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: SIMATIC STEP 7 Safety V18 18 Update 2

Timelineinfo

05/12/2023 🔍
07/09/2024 +424 days 🔍
07/09/2024 +0 days 🔍
07/09/2024 +0 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-313039
Status: Confirmed

CVE: CVE-2023-32737 (🔍)
GCVE (CVE): GCVE-0-2023-32737
GCVE (VulDB): GCVE-100-270646

Entryinfo

Created: 07/09/2024 14:31
Changes: 07/09/2024 14:31 (75)
Complete: 🔍
Cache ID: 216::103

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