Auth bypass in Artifex Ghostscript
CVE-2019-3835
It was found that the superexec operator was available in the internal dictionary in ghostscript before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.025 (83.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.025 · change: -0.002
Affected products
- Artifex Ghostscript
- The Ghostscript Project — versions 9.27
- Debian Linux — versions 8.0, 9.0
- Fedoraproject Fedora — versions 28, 29, 30
- openSUSE Leap — versions 15.0, 15.1
- Red Hat Ansible Tower — versions 3.3
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.6
- Red Hat Enterprise Linux Server Eus — versions 7.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- bugs.ghostscript.com/show_bug.cgi (Permissions Required, Vendor Advisory)
- access.redhat.com/errata/RHSA-2019:0652 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- seclists.org/bugtraq/2019/Apr/4 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/152367/Slackware-Security-Advisory-ghostscript-Up… (VDB Entry, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2019/dsa-4432 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Apr/28 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-3835?
- CVE-2019-3835 is a medium-severity vulnerability in Artifex Ghostscript, classified under CWE-648. CVSS score: 5.5/10. Published 2019-03-25.
- How severe is CVE-2019-3835?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2019-3835 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.