# CVE-2021-22098: Open redirect in UAA server

> Attackers can redirect UAA users to malicious sites, potentially leading to account takeover via social engineering.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 11 Aug 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gmmg-mg5x-45rp

## What is CVE-2021-22098?

CVE-2021-22098 is a medium-severity vulnerability in UAA server, published on 11 Aug 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

UAA server versions prior to 75.4.0 are vulnerable to an open redirect vulnerability. A malicious user can exploit the open redirect vulnerability by social engineering leading to take over of victims’ accounts in certain cases along with redirection of UAA users to a malicious sites.

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

## Which versions are affected by CVE-2021-22098?

It affects 2 products.


Products: Cloudfoundry Cf-Deployment, Cloudfoundry User Account and Authentication.

## How do I fix CVE-2021-22098?

No fix has been published for CVE-2021-22098 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22098 being exploited?

There is no known exploitation of CVE-2021-22098 in the wild and no public exploit code.

## Other vulnerabilities in UAA server

- [CVE-2022-31733](https://insights.sbomify.com/CVE-2022-31733/): Auth bypass in Cloud Foundry Diego and CF Deployment (critical 9.1)
- [CVE-2020-5402](https://insights.sbomify.com/CVE-2020-5402/): UAA fails to check the state parameter when authenticating with external IDPs (high 8.8)
- [CVE-2019-11293](https://insights.sbomify.com/CVE-2019-11293/): UAA logs all query parameters with debug logging level (high 8.8)
- [CVE-2019-11290](https://insights.sbomify.com/CVE-2019-11290/): Cloud Foundry UAA logs query parameters in tomcat access file (high 8.8)
- [CVE-2019-11283](https://insights.sbomify.com/CVE-2019-11283/): Password leak in smbdriver logs (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22098 and fix it if it is affected.

What it is: CVE-2021-22098 is a medium-severity vulnerability in UAA server, published on 11 Aug 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-2021-22098 in the wild and no public exploit code.

Affected product: UAA 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-2021-22098/ (Markdown: https://insights.sbomify.com/CVE-2021-22098/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22098
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22098
- OSV: https://osv.dev/vulnerability/CVE-2021-22098

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22098/
Summaries are generated and may contain mistakes; the official description above is the record.