# CVE-2018-4300: Information disclosure in CUPS

> Attackers can guess session cookies to gain unauthorized access to the CUPS web interface if it is enabled.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Apr 2019
- **Updated:** 5 Aug 2024
- **Also known as:** CVE-2018-4700, DEBIAN-CVE-2018-4300, DLA-1936-1, GHSA-7w9x-rg6m-2fh9

## What is CVE-2018-4300?

CVE-2018-4300 is a medium-severity vulnerability in Apple Cups, published on 3 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The session cookie generated by the CUPS web interface was easy to guess on Linux, allowing unauthorized scripted access to the web interface when the web interface is enabled. This issue affected versions prior to v2.2.10.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-4300?

It affects 1 product.


Products: Apple Cups.

## How do I fix CVE-2018-4300?

Upgrade to a fixed version.

## Is CVE-2018-4300 being exploited?

There is no known exploitation of CVE-2018-4300 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-2018-4300 and fix it if it is affected.

What it is: CVE-2018-4300 is a medium-severity vulnerability in Apple Cups, published on 3 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-4300 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-2018-4300/ (Markdown: https://insights.sbomify.com/CVE-2018-4300/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-4300
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-4300
- OSV: https://osv.dev/vulnerability/CVE-2018-4300

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-4300/
Summaries are generated and may contain mistakes; the official description above is the record.