# CVE-2021-23888: McAfee ePO unvalidated URL redirect vulnerability

> An authenticated user can be redirected to an untrusted site within an iframe, potentially leading to information theft.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-6h63-w9wm-rccq

## What is CVE-2021-23888?

CVE-2021-23888 is a medium-severity vulnerability in Mcafee Epolicy Orchestrator, published on 26 Mar 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Unvalidated client-side URL redirect vulnerability in McAfee ePolicy Orchestrator (ePO) prior to 5.10 Update 10 could cause an authenticated ePO user to load an untrusted site in an ePO iframe which could steal information from the authenticated user.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2021-23888?

It affects 1 product.


Products: Mcafee Epolicy Orchestrator.

## How do I fix CVE-2021-23888?

No fix has been published for CVE-2021-23888 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-23888 being exploited?

There is no known exploitation of CVE-2021-23888 in the wild and no public exploit code.

## Other vulnerabilities in Mcafee Epolicy Orchestrator

- [CVE-2016-8027](https://insights.sbomify.com/CVE-2016-8027/): SQL injection in McAfee ePolicy Orchestrator (ePO) 5.3.2 and earlier and 5.1.3 and earlier (critical 10.0)
- [CVE-2006-5156](https://insights.sbomify.com/CVE-2006-5156/): Memory corruption in n/a (critical 10.0)
- [CVE-2002-0690](https://insights.sbomify.com/CVE-2002-0690/): Code injection in n/a (critical 10.0)
- [CVE-2007-1498](https://insights.sbomify.com/CVE-2007-1498/): Memory corruption in n/a (critical 9.3)
- [CVE-2015-8765](https://insights.sbomify.com/CVE-2015-8765/): Deserialization in n/a (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-23888 and fix it if it is affected.

What it is: CVE-2021-23888 is a medium-severity vulnerability in Mcafee Epolicy Orchestrator, published on 26 Mar 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-23888 in the wild and no public exploit code.

Affected product: Mcafee Epolicy Orchestrator. 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-2021-23888/ (Markdown: https://insights.sbomify.com/CVE-2021-23888/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-23888
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-23888
- OSV: https://osv.dev/vulnerability/CVE-2021-23888

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-23888/
Summaries are generated and may contain mistakes; the official description above is the record.