# CVE-2021-34564: In WirelessHART-Gateway versions 3.0.9 a vulnerability allows to read and write sensitive data in a cookie

> An attacker can steal user credentials from cookies in the WirelessHART-Gateway, potentially leading to unauthorized access.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 31 Aug 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-g9mc-4fcm-jrr6

## What is CVE-2021-34564?

CVE-2021-34564 is a medium-severity vulnerability in Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH, published on 31 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Any cookie-stealing vulnerabilities within the application or browser would enable an attacker to steal the user's credentials to the PEPPERL+FUCHS WirelessHART-Gateway 3.0.9.

Weakness: CWE-315 (Cleartext Storage of Sensitive Information in a Cookie)

## Which versions are affected by CVE-2021-34564?

It affects 2 products.


Products: Pepperl-Fuchs Wha-Gw-F2d2-0-as- Z2-Eth.eip Firmware, Pepperl-Fuchs Wha-Gw-F2d2-0-as-Z2-Eth Firmware.

## How do I fix CVE-2021-34564?

No fix has been published for CVE-2021-34564 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34564 being exploited?

There is no known exploitation of CVE-2021-34564 in the wild and no public exploit code.

## Other vulnerabilities in Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH

- [CVE-2021-33555](https://insights.sbomify.com/CVE-2021-33555/): A vulnerability may allow remote attackers to read arbitrary files on the server of the WirelessHART-Gateway (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34564 and fix it if it is affected.

What it is: CVE-2021-34564 is a medium-severity vulnerability in Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH, published on 31 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-34564 in the wild and no public exploit code.

Affected product: Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH. 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-2021-34564/ (Markdown: https://insights.sbomify.com/CVE-2021-34564/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34564
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34564
- OSV: https://osv.dev/vulnerability/CVE-2021-34564

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-34564/
Summaries are generated and may contain mistakes; the official description above is the record.