# CVE-2021-3781: ghostscript: A trivial sandbox (enabled with the `-dSAFER` option) escape flaw was found in the ghostscript interpreter by injecti...

CVE-2021-3781 is fixed in 4 products on 1 platform, first by ghostscript 9.50~dfsg-5ubuntu4.3, released September 7, 2021. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2021-3781
- Priority: Urgent
- CVSS: 9.9 (critical)
- EPSS: 0.8391
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 7, 2021

## Description

A trivial sandbox (enabled with the `-dSAFER` option) escape flaw was found in the ghostscript interpreter by injecting a specially crafted pipe command. This flaw allows a specially crafted document to execute arbitrary commands on the system in the context of the ghostscript interpreter. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ghostscript Debian 12.15 (bookworm) | 9.53.3~dfsg-8 | [DEBIAN-CVE-2021-3781](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3781.md) | Feb 16, 2022 |
| Linux | ghostscript Debian 13.5 (trixie) | 9.53.3~dfsg-8 | [DEBIAN-CVE-2021-3781](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3781.md) | Feb 16, 2022 |
| Linux | ghostscript Debian 14 | 9.53.3~dfsg-8 | [DEBIAN-CVE-2021-3781](https://patchblox.com/security/data/fix/linux/debian-cve-2021-3781.md) | Feb 16, 2022 |
| Linux | ghostscript Ubuntu 20.04 LTS (focal) | 9.50~dfsg-5ubuntu4.3 | [ghostscript 9.50~dfsg-5ubuntu4.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ghostscript-9.50-dfsg-5ubuntu4.3.md) | Sep 7, 2021 |
| Linux | ghostscript Ubuntu 22.04.1 LTS (jammy) | 9.54.0~dfsg1-0ubuntu2 | [ghostscript 9.54.0~dfsg1-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ghostscript-9.54.0-dfsg1-0ubuntu2.md) | Sep 7, 2021 |
| Linux | ghostscript-x Ubuntu 20.04 LTS (focal) | 9.50~dfsg-5ubuntu4.3 | [ghostscript-x 9.50~dfsg-5ubuntu4.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ghostscript-x-9.50-dfsg-5ubuntu4.3.md) | Sep 7, 2021 |
| Linux | ghostscript-x Ubuntu 22.04.1 LTS (jammy) | 9.54.0~dfsg1-0ubuntu2 | [ghostscript-x 9.54.0~dfsg1-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ghostscript-x-9.54.0-dfsg1-0ubuntu2.md) | Sep 7, 2021 |
| Linux | libgs9 Ubuntu 20.04 LTS (focal) | 9.50~dfsg-5ubuntu4.3 | [libgs9 9.50~dfsg-5ubuntu4.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgs9-9.50-dfsg-5ubuntu4.3.md) | Sep 7, 2021 |
| Linux | libgs9 Ubuntu 22.04.1 LTS (jammy) | 9.54.0~dfsg1-0ubuntu2 | [libgs9 9.54.0~dfsg1-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgs9-9.54.0-dfsg1-0ubuntu2.md) | Sep 7, 2021 |
| Linux | libgs9-common Ubuntu 20.04 LTS (focal) | 9.50~dfsg-5ubuntu4.3 | [libgs9-common 9.50~dfsg-5ubuntu4.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgs9-common-9.50-dfsg-5ubuntu4.3.md) | Sep 7, 2021 |
| Linux | libgs9-common Ubuntu 22.04.1 LTS (jammy) | 9.54.0~dfsg1-0ubuntu2 | [libgs9-common 9.54.0~dfsg1-0ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgs9-common-9.54.0-dfsg1-0ubuntu2.md) | Sep 7, 2021 |

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