# CVE-2023-21841: Auth bypass in WebLogic Server

> Unauthenticated attackers can bypass authentication to access critical data in Oracle WebLogic Server via T3 or IIOP protocols.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Jan 2023
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-xq64-r3j5-hcfg

## What is CVE-2023-21841?

CVE-2023-21841 is a high-severity authentication bypass vulnerability in Oracle Weblogic Server, published on 17 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core).  Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and  14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2023-21841?

It affects 1 product.


Products: Oracle Weblogic Server.

## How do I fix CVE-2023-21841?

No fix has been published for CVE-2023-21841 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-21841 being exploited?

There is no known exploitation of CVE-2023-21841 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Weblogic Server

- [CVE-2020-14750](https://insights.sbomify.com/CVE-2020-14750/): Oracle WebLogic Server Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2020-14882](https://insights.sbomify.com/CVE-2020-14882/): Oracle WebLogic Server Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2020-14644](https://insights.sbomify.com/CVE-2020-14644/): Oracle WebLogic Server Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2020-2883](https://insights.sbomify.com/CVE-2020-2883/): Oracle WebLogic Server Unspecified (critical 9.8, exploited in the wild)
- [CVE-2020-2551](https://insights.sbomify.com/CVE-2020-2551/): Oracle Fusion Middleware Unspecified (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-21841 and fix it if it is affected.

What it is: CVE-2023-21841 is a high-severity authentication bypass vulnerability in Oracle Weblogic Server, published on 17 Jan 2023. 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-2023-21841 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-2023-21841/ (Markdown: https://insights.sbomify.com/CVE-2023-21841/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21841
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21841
- OSV: https://osv.dev/vulnerability/CVE-2023-21841

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-21841/
Summaries are generated and may contain mistakes; the official description above is the record.