# CVE-2017-12740: Supply chain in Siemens LOGO! Soft Comfort (All versions before V8.2)

> Remote attackers can manipulate software packages via Man-in-the-Middle attacks due to missing integrity checks, potentially leading to code execution.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Dec 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-g8wq-427w-wgqm

## What is CVE-2017-12740?

CVE-2017-12740 is a medium-severity vulnerability in Siemens LOGO! Soft Comfort (All versions before V8.2), published on 26 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Siemens LOGO! Soft Comfort (All versions before V8.2) lacks integrity verification of software packages downloaded via an unprotected communication channel. This could allow a remote attacker to manipulate the software package while performing a Man-in-the-Middle (MitM) attack.

Weakness: CWE-345 (Insufficient Verification of Data Authenticity), CWE-494 (Download of Code Without Integrity Check)

## Which versions are affected by CVE-2017-12740?

It affects 1 product.


Products: Siemens Logo\! Soft Comfort.

## How do I fix CVE-2017-12740?

No fix has been published for CVE-2017-12740 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-12740 being exploited?

There is no known exploitation of CVE-2017-12740 in the wild and no public exploit code.

## Other vulnerabilities in Siemens LOGO! Soft Comfort (All versions before V8.2)

- [CVE-2020-25244](https://insights.sbomify.com/CVE-2020-25244/): Other in LOGO! Soft Comfort (high 8.4)
- [CVE-2019-10924](https://insights.sbomify.com/CVE-2019-10924/): Deserialization in LOGO! Soft Comfort (high 7.8)
- [CVE-2020-25243](https://insights.sbomify.com/CVE-2020-25243/): Path traversal in LOGO! Soft Comfort (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-12740 and fix it if it is affected.

What it is: CVE-2017-12740 is a medium-severity vulnerability in Siemens LOGO! Soft Comfort (All versions before V8.2), published on 26 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-12740 in the wild and no public exploit code.

Affected product: Siemens LOGO! Soft Comfort (All versions before V8.2). 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-2017-12740/ (Markdown: https://insights.sbomify.com/CVE-2017-12740/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12740
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12740
- OSV: https://osv.dev/vulnerability/CVE-2017-12740

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-12740/
Summaries are generated and may contain mistakes; the official description above is the record.