# CVE-2022-21949: Multiple XXE vulnerabilities in OBS

> Remote attackers can exploit XML External Entity flaws in SUSE Open Build Service to read server data and escalate privileges to Admin.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 May 2022
- **Updated:** 16 Sep 2024
- **Also known as:** DEBIAN-CVE-2022-21949, GHSA-3wrh-hc8c-4jpw, OESA-2022-1674, UBUNTU-CVE-2022-21949

## What is CVE-2022-21949?

CVE-2022-21949 is a high-severity vulnerability in SUSE Open Build Service, published on 3 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A Improper Restriction of XML External Entity Reference vulnerability in SUSE Open Build Service allows remote attackers to reference external entities in certain operations. This can be used to gain information from the server that can be abused to escalate to Admin privileges on OBS. This issue affects: SUSE Open Build Service Open Build Service versions prior to 2.10.13.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2022-21949?

It affects 1 product.


Products: Opensuse Open Build Service.

## How do I fix CVE-2022-21949?

Upgrade to a fixed version.

## Is CVE-2022-21949 being exploited?

There is no known exploitation of CVE-2022-21949 in the wild and no public exploit code.

## Other vulnerabilities in SUSE Open Build Service

- [CVE-2013-3703](https://insights.sbomify.com/CVE-2013-3703/): No write permission check in change_role command (high 8.8)
- [CVE-2014-0594](https://insights.sbomify.com/CVE-2014-0594/): CSRF protection incorrectly disabled (high 8.8)
- [CVE-2021-36777](https://insights.sbomify.com/CVE-2021-36777/): login-proxy sends password to attacker-provided domain (high 8.1)
- [CVE-2011-3178](https://insights.sbomify.com/CVE-2011-3178/): openbuildservice webui code injection (high 8.1)
- [CVE-2014-0593](https://insights.sbomify.com/CVE-2014-0593/): sed command injection (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-21949 and fix it if it is affected.

What it is: CVE-2022-21949 is a high-severity vulnerability in SUSE Open Build Service, published on 3 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-21949 in the wild and no public exploit code.

Affected product: SUSE Open Build Service. 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-2022-21949/ (Markdown: https://insights.sbomify.com/CVE-2022-21949/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21949
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21949
- OSV: https://osv.dev/vulnerability/CVE-2022-21949

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-21949/
Summaries are generated and may contain mistakes; the official description above is the record.