# CVE-2021-44564: Information disclosure in n/a

> An attacker with network access can download and modify the configuration file of SYNC devices due to an unsecured communication channel.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Jan 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-q2pf-f9qr-87mv

## What is CVE-2021-44564?

CVE-2021-44564 is a high-severity vulnerability in n/a, published on 6 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A security vulnerability originally reported in the SYNC2101 product, and applicable to specific sub-families of SYNC devices, allows an attacker to download the configuration file used in the device and apply a modified configuration file back to the device. The attack requires network access to the SYNC device and knowledge of its IP address. The attack exploits the unsecured communication channel used between the administration tool Easyconnect and the SYNC device (in the affected family of SYNC products).

## Which versions are affected by CVE-2021-44564?

It affects 20 products.


Products: Kalkitech Sync2000-M1 Firmware, Kalkitech Sync2000-M2 Firmware, Kalkitech Sync2000-M4 Firmware, Kalkitech Sync2101-M1 Firmware, Kalkitech Sync2101-M2 Firmware, Kalkitech Sync2101-M6 Firmware, Kalkitech Sync2101-M7 Firmware, Kalkitech Sync2101-M8 Firmware, Kalkitech Sync2111-M2 Firmware, Kalkitech Sync2111-M3 Firmware, Kalkitech Sync221-M1 Firmware, Kalkitech Sync241-M1 Firmware, Kalkitech Sync241-M2 Firmware, Kalkitech Sync241-M4 Firmware, Kalkitech Sync261-M1 Firmware, Kalkitech Sync3000-M12 Firmware, Kalkitech Sync3000-M1 Firmware, Kalkitech Sync3000-M2 Firmware, Kalkitech Sync3000-M3 Firmware, Kalkitech Sync3000-M4 Firmware.

## How do I fix CVE-2021-44564?

No fix has been published for CVE-2021-44564 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-44564 being exploited?

There is no known exploitation of CVE-2021-44564 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-44564 and fix it if it is affected.

What it is: CVE-2021-44564 is a high-severity vulnerability in n/a, published on 6 Jan 2022. 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-2021-44564 in the wild and no public exploit code.

Affected product: n/a. 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-2021-44564/ (Markdown: https://insights.sbomify.com/CVE-2021-44564/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44564
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44564
- OSV: https://osv.dev/vulnerability/CVE-2021-44564

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-44564/
Summaries are generated and may contain mistakes; the official description above is the record.