# CVE-2022-23822: Auth bypass in Zynq-7000 SoC FSBL

> An attacker with physical access can bypass authentication in the Zynq-7000 FSBL to load malicious images, enabling further attacks like decryption oracle usage.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 27 Apr 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-734j-8w33-h29h

## What is CVE-2022-23822?

CVE-2022-23822 is a medium-severity authentication bypass vulnerability in AMD-Xilinx Zynq-7000 SoC FSBL, published on 27 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In this physical attack, an attacker may potentially exploit the Zynq-7000 SoC First Stage Boot Loader (FSBL) by bypassing authentication and loading a malicious image onto the device. This in turn may further allow the attacker to perform additional attacks such as such as using the device as a decryption oracle. An anticipated mitigation via a 2022.1 patch will resolve the issue.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2022-23822?

It affects 2 products.


Products: Xilinx Zynq-7000 Firmware, Xilinx Zynq-7000s Firmware.

## How do I fix CVE-2022-23822?

No fix has been published for CVE-2022-23822 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-23822 being exploited?

There is no known exploitation of CVE-2022-23822 in the wild and no public exploit code.

## Other vulnerabilities in AMD-Xilinx Zynq-7000 SoC FSBL

- [CVE-2021-27208](https://insights.sbomify.com/CVE-2021-27208/): Memory corruption in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-23822 and fix it if it is affected.

What it is: CVE-2022-23822 is a medium-severity authentication bypass vulnerability in AMD-Xilinx Zynq-7000 SoC FSBL, published on 27 Apr 2022. 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-2022-23822 in the wild and no public exploit code.

Affected product: AMD-Xilinx Zynq-7000 SoC FSBL. 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-2022-23822/ (Markdown: https://insights.sbomify.com/CVE-2022-23822/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-23822
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-23822
- OSV: https://osv.dev/vulnerability/CVE-2022-23822

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-23822/
Summaries are generated and may contain mistakes; the official description above is the record.