# CVE-2018-4847: Information disclosure in SIMATIC WinCC OA Operator iOS App

> An attacker with physical access can read unencrypted session keys from the SIMATIC WinCC OA Operator iOS app directory.

- **Severity:** Medium 4.6 (`CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Apr 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-99fm-5qxm-cg7x

## What is CVE-2018-4847?

CVE-2018-4847 is a medium-severity vulnerability in Siemens AG SIMATIC WinCC OA Operator iOS App, published on 23 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability has been identified in SIMATIC WinCC OA Operator iOS App (All versions < V1.4). 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. Siemens provides mitigations to resolve the security issue.

Weakness: CWE-311 (Missing Encryption of Sensitive Data), CWE-538 (Insertion of Sensitive Information into Externally-Accessible File or Directory)

## Which versions are affected by CVE-2018-4847?

It affects 1 product.


Products: Siemens Simatic Wincc Oa Operator.

## How do I fix CVE-2018-4847?

No fix has been published for CVE-2018-4847 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-4847 being exploited?

There is no known exploitation of CVE-2018-4847 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-4847 and fix it if it is affected.

What it is: CVE-2018-4847 is a medium-severity vulnerability in Siemens AG SIMATIC WinCC OA Operator iOS App, published on 23 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-4847 in the wild and no public exploit code.

Affected product: Siemens AG SIMATIC WinCC OA Operator iOS App. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-4847/ (Markdown: https://insights.sbomify.com/CVE-2018-4847/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-4847
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-4847
- OSV: https://osv.dev/vulnerability/CVE-2018-4847

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-4847/
Summaries are generated and may contain mistakes; the official description above is the record.