# CVE-2021-2138: Missing authorization in Oracle Cloud Infrastructure Data Science Notebook Sessions

> Low-privileged attackers on the same network segment can read and modify data in Oracle Cloud Infrastructure Data Science Notebook Sessions.

- **Severity:** Medium 4.6 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Mar 2021
- **Updated:** 26 Sep 2024
- **Also known as:** GHSA-4v82-m79g-wgg4

## What is CVE-2021-2138?

CVE-2021-2138 is a medium-severity missing authorization vulnerability in Oracle Cloud Infrastructure Data Science Notebook Sessions, published on 3 Mar 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Vulnerability in the Oracle Cloud Infrastructure Data Science Notebook Sessions. Easily exploitable vulnerability allows low privileged attacker with access to the physical communication segment attached to the hardware where the Oracle Cloud Infrastructure Data Science Notebook Sessions executes to compromise Oracle Cloud Infrastructure Data Science Notebook Sessions. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Cloud Infrastructure Data Science Notebook Sessions accessible data as well as unauthorized read access to a subset of Oracle Cloud Infrastructure Data Science Notebook Sessions accessible data. All affected customers were notified of CVE-2021-2138 by Oracle. CVSS 3.1 Base Score 4.6 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)

## Which versions are affected by CVE-2021-2138?

It affects 1 product.


Products: Oracle Cloud Infrastructure Data Science.

## How do I fix CVE-2021-2138?

No fix has been published for CVE-2021-2138 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-2138 being exploited?

There is no known exploitation of CVE-2021-2138 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-2138 and fix it if it is affected.

What it is: CVE-2021-2138 is a medium-severity missing authorization vulnerability in Oracle Cloud Infrastructure Data Science Notebook Sessions, published on 3 Mar 2021. 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-2021-2138 in the wild and no public exploit code.

Affected product: Oracle Cloud Infrastructure Data Science Notebook Sessions. 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-2021-2138/ (Markdown: https://insights.sbomify.com/CVE-2021-2138/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-2138
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-2138
- OSV: https://osv.dev/vulnerability/CVE-2021-2138

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-2138/
Summaries are generated and may contain mistakes; the official description above is the record.