RCE in Artifex Ghostscript
CVE-2021-3781
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 sy…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.839 (99.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Artifex Ghostscript — versions 9.50, 9.52, 9.53.3
- Fedoraproject Fedora — versions 34
- N/a Ghostscript — versions ghostpdl 9.55.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, Vendor Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3781?
- CVE-2021-3781 is a critical-severity vulnerability in Artifex Ghostscript, classified under Improper Input Validation. CVSS score: 9.9/10. Published 2022-02-16.
- How severe is CVE-2021-3781?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2021-3781 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.