# CVE-2017-7971: Weak cryptography in Citect Anywhere

> Schneider Electric SCADA software uses outdated ciphers and improper SSL verification, allowing attackers to bypass security controls.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Sep 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-8f23-48gc-8rgj

## What is CVE-2017-7971?

CVE-2017-7971 is a medium-severity vulnerability in Schneider Electric SE Citect Anywhere, published on 25 Sep 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability exists in Schneider Electric's PowerSCADA Anywhere v1.0 redistributed with PowerSCADA Expert v8.1 and PowerSCADA Expert v8.2 and Citect Anywhere version 1.0 that allows the use of outdated cipher suites and improper verification of peer SSL Certificate.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2017-7971?

It affects 2 products.


Products: Schneider-Electric Citect Anywhere, Schneider-Electric Powerscada Anywhere.

## How do I fix CVE-2017-7971?

No fix has been published for CVE-2017-7971 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7971 being exploited?

There is no known exploitation of CVE-2017-7971 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric SE Citect Anywhere

- [CVE-2017-7969](https://insights.sbomify.com/CVE-2017-7969/): Cross-site request forgery in Citect Anywhere (high 8.8)
- [CVE-2017-7970](https://insights.sbomify.com/CVE-2017-7970/): Server-side request forgery in Citect Anywhere (medium 6.5)
- [CVE-2017-7972](https://insights.sbomify.com/CVE-2017-7972/): Command injection in Citect Anywhere (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7971 and fix it if it is affected.

What it is: CVE-2017-7971 is a medium-severity vulnerability in Schneider Electric SE Citect Anywhere, published on 25 Sep 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-7971 in the wild and no public exploit code.

Affected product: Schneider Electric SE Citect Anywhere. 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-2017-7971/ (Markdown: https://insights.sbomify.com/CVE-2017-7971/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7971
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7971
- OSV: https://osv.dev/vulnerability/CVE-2017-7971

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-7971/
Summaries are generated and may contain mistakes; the official description above is the record.