Buffer overflow in Artifex Ghostscript
CVE-2020-15900
A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.052 (92.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.052 · newest: 0.052 · change: 0.000
Affected products
- Artifex Ghostscript — versions 9.50, 9.52
- Canonical Ubuntu Linux — versions 20.04
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.ghostscript.com/
- github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c (Patch, Third Party Advisory)
- git.ghostscript.com/
- github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000… (Patch, Third Party Advisory)
- artifex.com/security-advisories/CVE-2020-15900 (Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html (vendor-advisory, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4445-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202008-20 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15900?
- CVE-2020-15900 is a critical-severity vulnerability in Artifex Ghostscript, classified under Integer Underflow. CVSS score: 9.8/10. Published 2020-07-28.
- How severe is CVE-2020-15900?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-15900 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.