# CVE-2018-12473: path traversal in obs-service-tar_scm

> Remote attackers can access files outside the current build directory in Open Build Service, though server confinement mitigates direct host access.

- **Severity:** Low 3.1 (`CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **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:** 2 Oct 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-46f9-xh5g-7wf2

## What is CVE-2018-12473?

CVE-2018-12473 is a low-severity path traversal vulnerability in openSUSE Open Build Service, published on 2 Oct 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A path traversal traversal vulnerability in obs-service-tar_scm of Open Build Service allows remote attackers to cause access files not in the current build. On the server itself this is prevented by confining the worker via KVM. Affected releases are openSUSE Open Build Service: versions prior to 70d1aa4cc4d7b940180553a63805c22fc62e2cf0.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-23 (Relative Path Traversal)

## Which versions are affected by CVE-2018-12473?

It affects 1 product.


Products: Opensuse Open Build Service.

## How do I fix CVE-2018-12473?

Apply the vendor's patch.

## Is CVE-2018-12473 being exploited?

There is no known exploitation of CVE-2018-12473 in the wild and no public exploit code.

## Other vulnerabilities in openSUSE Open Build Service

- [CVE-2022-21949](https://insights.sbomify.com/CVE-2022-21949/): Multiple XXE vulnerabilities in OBS (high 8.8)
- [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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-12473 and fix it if it is affected.

What it is: CVE-2018-12473 is a low-severity path traversal vulnerability in openSUSE Open Build Service, published on 2 Oct 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-12473 in the wild and no public exploit code.

Affected product: openSUSE 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-2018-12473/ (Markdown: https://insights.sbomify.com/CVE-2018-12473/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-12473
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-12473
- OSV: https://osv.dev/vulnerability/CVE-2018-12473

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-12473/
Summaries are generated and may contain mistakes; the official description above is the record.