# CVE-2021-2018: Other in Advanced Networking Option

> An unauthenticated attacker can compromise the Advanced Networking Option in Oracle Database Server, leading to full takeover of the component.

- **Severity:** High 8.3 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Jan 2021
- **Updated:** 26 Sep 2024
- **Also known as:** GHSA-q87v-4pg3-cw3m

## What is CVE-2021-2018?

CVE-2021-2018 is a high-severity vulnerability in Oracle Weblogic Server, published on 20 Jan 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Vulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 18c and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced Networking Option. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Advanced Networking Option, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Advanced Networking Option. Note: CVE-2021-2018 affects Windows platform only. CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H).

## Which versions are affected by CVE-2021-2018?

It affects 6 products.


Products: Oracle Adaptive Access Manager, Oracle Advanced Networking Option, Oracle Data Integrator, Oracle Enterprise Manager for Fusion Applications, Oracle Hospitality Simphony, Oracle Weblogic Server.

## How do I fix CVE-2021-2018?

No fix has been published for CVE-2021-2018 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-2018 being exploited?

There is no known exploitation of CVE-2021-2018 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Weblogic Server

- [CVE-2018-2770](https://insights.sbomify.com/CVE-2018-2770/): Information disclosure in Adaptive Access Manager (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-2018 and fix it if it is affected.

What it is: CVE-2021-2018 is a high-severity vulnerability in Oracle Weblogic Server, published on 20 Jan 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-2018 in the wild and no public exploit code.

Affected product: Oracle Weblogic Server. 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-2021-2018/ (Markdown: https://insights.sbomify.com/CVE-2021-2018/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-2018
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-2018
- OSV: https://osv.dev/vulnerability/CVE-2021-2018

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-2018/
Summaries are generated and may contain mistakes; the official description above is the record.