# CVE-2017-18248: Denial of service in n/a

> Remote attackers can crash the CUPS scheduler by sending print jobs with invalid usernames when D-Bus support is enabled.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/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:** 26 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-18248, DLA-1387-1, GHSA-445m-qfhv-mv64, MGASA-2018-0224, UBUNTU-CVE-2017-18248

## What is CVE-2017-18248?

CVE-2017-18248 is a medium-severity denial of service vulnerability in Apple Cups, published on 26 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The add_job function in scheduler/ipp.c in CUPS before 2.2.6, when D-Bus support is enabled, can be crashed by remote attackers by sending print jobs with an invalid username, related to a D-Bus notification.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2017-18248?

It affects 1 product.


Products: Apple Cups.

## How do I fix CVE-2017-18248?

Upgrade to a fixed version.

## Is CVE-2017-18248 being exploited?

There is no known exploitation of CVE-2017-18248 in the wild and no public exploit code.

## Other vulnerabilities in Apple Cups

- [CVE-2008-5184](https://insights.sbomify.com/CVE-2008-5184/): Cross-site request forgery in n/a (critical 10.0)
- [CVE-2008-3641](https://insights.sbomify.com/CVE-2008-3641/): Memory corruption in n/a (critical 10.0)
- [CVE-2008-0053](https://insights.sbomify.com/CVE-2008-0053/): Memory corruption in n/a (critical 10.0)
- [CVE-2012-6094](https://insights.sbomify.com/CVE-2012-6094/): Missing authorization in cups (critical 9.8)
- [CVE-2010-2941](https://insights.sbomify.com/CVE-2010-2941/): Use after free in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-18248 and fix it if it is affected.

What it is: CVE-2017-18248 is a medium-severity denial of service vulnerability in Apple Cups, published on 26 Mar 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-2017-18248 in the wild and no public exploit code.

Affected product: Apple Cups. 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-2017-18248/ (Markdown: https://insights.sbomify.com/CVE-2017-18248/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-18248
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-18248
- OSV: https://osv.dev/vulnerability/CVE-2017-18248

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-18248/
Summaries are generated and may contain mistakes; the official description above is the record.