---
title: "CVE-2018-18073\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-18073?format=md
keywords: index, follow
---

# CVE-2018-18073

Publication date 15 October 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**6.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2018-18073?format=md#impact-score)

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## Description

Artifex Ghostscript allows attackers to bypass a sandbox protection
mechanism by leveraging exposure of system operators in the saved execution
stack in an error object.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ghostscript | 18.10 cosmic | Fixed 9.25~dfsg+1-0ubuntu1.1 |
| 18.04 LTS bionic | Fixed 9.25~dfsg+1-0ubuntu0.18.04.2 |
| 16.04 LTS xenial | Fixed 9.25~dfsg+1-0ubuntu0.16.04.2 |
| 14.04 LTS trusty | Fixed 9.25~dfsg+1-0ubuntu0.14.04.2 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2018-18073?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| ghostscript | * Upstream:   <http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=34cc326eb2c5695833361887fe0b32e8d987741c> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Changed |
  | Confidentiality impact | High |
  | Integrity impact | None |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18073)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-18073)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-18073)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-18073)

### Related Ubuntu Security Notices (USN)

+ [USN-3803-1](https://usn.ubuntu.com/USN-3803-1)
+ Ghostscript vulnerabilities
+ 30 October 2018

### Other references

* <https://www.openwall.com/lists/oss-security/2018/10/10/12>
* <https://www.cve.org/CVERecord?id=CVE-2018-18073>