Siemens SIMATIC WinCC OA Operator iOS App Session Key information disclosure

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 (≈)
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Siemens SIMATIC WinCC OA Operator iOS App. Impacted is an unknown function of the component Session Key Handler. Performing a manipulation results in information disclosure. This vulnerability is cataloged as CVE-2018-4847. The attack may be carried out on the physical device. There is no exploit available.

Detailsinfo

A vulnerability was found in Siemens SIMATIC WinCC OA Operator iOS App (iOS App Software) (affected version not known). It has been classified as problematic. This affects some unknown functionality of the component Session Key Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

A vulnerability has been identified in SIMATIC WinCC OA Operator iOS App (All versions). Insufficient protection of sensitive information (e.g. session key for accessing server) in Siemens WinCC OA Operator iOS app could allow an attacker with physical access to the mobile device to read unencrypted data from the app's directory. At the time of advisory publication no public exploitation of this security vulnerability was known. Siemens provides mitigations to resolve the security issue.

The bug was discovered 04/19/2018. The weakness was shared 04/23/2018 by Alex with Embedi (Website). It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2018-4847 since 01/02/2018. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k.

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 103941†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 2.4
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

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 🔍
04/19/2018 +107 days 🔍
04/19/2018 +0 days 🔍
04/23/2018 +3 days 🔍
04/23/2018 +0 days 🔍
04/24/2018 +1 days 🔍
03/03/2023 +1774 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-597741
Researcher: Alex
Organization: Embedi
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-4847 (🔍)
GCVE (CVE): GCVE-0-2018-4847
GCVE (VulDB): GCVE-100-116979
SecurityFocus: 103941 - Siemens SIMATIC WinCC OA Operator IOS App CVE-2018-4847 Local Information Disclosure Vulnerability

Entryinfo

Created: 04/24/2018 09:02
Updated: 03/03/2023 19:01
Changes: 04/24/2018 09:02 (59), 01/31/2020 13:43 (6), 03/03/2023 19:01 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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