National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-4844 Detail

Current Description

A vulnerability has been identified in SIMATIC WinCC OA UI for Android (All versions < V3.15.10), SIMATIC WinCC OA UI for iOS (All versions < V3.15.10). Insufficient limitation of CONTROL script capabilities could allow read and write access from one HMI project cache folder to other HMI project cache folders within the app's sandbox on the same mobile device. This includes HMI project cache folders of other configured WinCC OA servers. The security vulnerability could be exploited by an attacker who tricks an app user to connect to an attacker-controlled WinCC OA server. Successful exploitation requires user interaction and read/write access to the app's folder on a mobile device. The vulnerability could allow reading data from and writing data to the app's folder. At the time of advisory publication no public exploitation of this security vulnerability was known. Siemens confirms the security vulnerability and provides mitigations to resolve the security issue.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.7 MEDIUM
Vector: AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N (V3 legend)
Impact Score: 5.2
Exploitability Score: 1.5


Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 3.8 LOW
Vector: (AV:A/AC:M/Au:S/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 4.4


Access Vector (AV): Local_Network
Access Complexity (AC): Medium
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/103475 Third Party Advisory VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-822928.pdf Vendor Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-081-01 US Government Resource VDB Entry

Technical Details

Vulnerability Type (View All)

  • Improper Access Control (CWE-284)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:siemens:simatic_wincc_oa_ui:*:*:*:*:*:android:*:*
     Show Matching CPE(s)
Up to (excluding)
3.15.10
 cpe:2.3:a:siemens:simatic_wincc_oa_ui:*:*:*:*:*:iphone_os:*:*
     Show Matching CPE(s)
Up to (excluding)
3.15.10


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-4844
NVD Published Date:
03/20/2018
NVD Last Modified:
04/18/2018