Information disclosure in Simatic WinCC OA iOS App - CVE-2018-4847
Published: April 19, 2018 / Updated: April 21, 2018
Vulnerability identifier: #VU12076
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-4847
CWE-ID: CWE-538
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
Simatic WinCC OA iOS App
Simatic WinCC OA iOS App
Detailed vulnerability description
The vulnerability allows a physical attacker to obtain potentially sensitive information.
The vulnerability exists due to file and directory information exposure. A remote attacker with physical access to the mobile device can read unencrypted sensitive data from the app’s directory.
How to mitigate CVE-2018-4847
Siemens has identified the following specific workarounds and mitigations that users can apply to reduce the risk:
- Toggle off the button to save password while logging in, and logout after every work session.
- Follow the SIMATIC WinCC OA Security Guideline (available at https://portal.etm.at/index.php? option=com_phocadownload&view=category&id=52:security&Itemid=81) for maintaining a secured SIMATIC WinCC OA environment.
- Siemens does not recommend to use the app in high security areas.