# CVE-2023-21833: Information disclosure in Sun ZFS Storage Appliance Kit (AK) Software

> A low-privileged attacker can gain unauthorized read access to a subset of data in the Oracle ZFS Storage Appliance Kit via HTTP.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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:** 17 Feb 2024
- **Updated:** 27 Mar 2025
- **Also known as:** GHSA-7q9h-g4j7-9vvh

## What is CVE-2023-21833?

CVE-2023-21833 is a medium-severity vulnerability in Oracle Zfs Storage Appliance Kit, published on 17 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Object Store).   The supported version that is affected is 8.8. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle ZFS Storage Appliance Kit.  Successful attacks of this vulnerability can result in  unauthorized read access to a subset of Oracle ZFS Storage Appliance Kit accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-21833?

It affects 1 product.


Products: Oracle Zfs Storage Appliance Kit.

## How do I fix CVE-2023-21833?

No fix has been published for CVE-2023-21833 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-21833 being exploited?

There is no known exploitation of CVE-2023-21833 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Zfs Storage Appliance Kit

- [CVE-2022-21513](https://insights.sbomify.com/CVE-2022-21513/): Privilege escalation in Sun ZFS Storage Appliance Kit (AK) Software (high 8.2)
- [CVE-2025-62290](https://insights.sbomify.com/CVE-2025-62290/): Auth bypass in Oracle ZFS Storage Appliance Kit (high 7.2)
- [CVE-2024-21104](https://insights.sbomify.com/CVE-2024-21104/): Privilege escalation in Sun ZFS Storage Appliance Kit (AK) Software (medium 6.5)
- [CVE-2025-53046](https://insights.sbomify.com/CVE-2025-53046/): Denial of service in Oracle ZFS Storage Appliance Kit (medium 4.9)
- [CVE-2025-62289](https://insights.sbomify.com/CVE-2025-62289/): Denial of service in Oracle ZFS Storage Appliance Kit (medium 4.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-21833 and fix it if it is affected.

What it is: CVE-2023-21833 is a medium-severity vulnerability in Oracle Zfs Storage Appliance Kit, published on 17 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-21833 in the wild and no public exploit code.

Affected product: Oracle Zfs Storage Appliance Kit. 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-2023-21833/ (Markdown: https://insights.sbomify.com/CVE-2023-21833/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21833
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21833
- OSV: https://osv.dev/vulnerability/CVE-2023-21833

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-21833/
Summaries are generated and may contain mistakes; the official description above is the record.