ghostscript: NULL pointer dereference in compose_group_nonknockout_nonblend_isolated_allmask_common() in base/gxblend.c could result in a DoS
Published Aug 13, 2020
5.5
MEDIUMCVSS 3.1
EPSS 1.77%
Description
A null pointer dereference vulnerability in compose_group_nonknockout_nonblend_isolated_allmask_common() in base/gxblend.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted PDF file. This is fixed in v9.51.
Affected products
No data.
Configuration 1
- < 9.52
Configuration 2
- 9.0
- 10.0
Configuration 3
- 16.04
- 18.04
- 20.04
No data.
Red Hat Enterprise Linux 8
ghostscript-0:9.27-1.el8
Fixed · RHSA-2021:1852
Red Hat 3scale API Management Platform 2
ghostscript
Not affected
Red Hat Enterprise Linux 5
ghostscript
Out of support scope
Red Hat Enterprise Linux 6
ghostscript
Out of support scope
Red Hat Enterprise Linux 7
ghostscript
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | ghostscript-0:9.27-1.el8 | Fixed | RHSA-2021:1852 |
| Red Hat 3scale API Management Platform 2 | ghostscript | Not affected | n/a |
| Red Hat Enterprise Linux 5 | ghostscript | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | ghostscript | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | ghostscript | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (16 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.77% (0.01775) | 77.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.78% (0.01782) | 75.31th | v5 (v2026.06.15) |
| Nov 17, 2025 | 1.31% (0.01311) | 79.17th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.24% (0.00241) | 45.41th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.39% (0.00388) | 74.07th | v3 (v2023.03.01) |
| Jul 20, 2024 | 0.39% (0.00388) | 73.47th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.34% (0.00340) | 70.61th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.34% (0.00340) | 68.19th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.25% (0.00251) | 62.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.19% (0.00195) | 55.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.15% (0.02150) | 56.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.41% (0.09409) | 86.81th | v1 |
| Jan 6, 2022 | 9.41% (0.09409) | 86.65th | v1 |
| Jan 5, 2022 | 2.26% (0.02262) | 78.39th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.26% (0.02262) | 0.00th | v1 |
References (10)
- https://access.redhat.com/security/cve/CVE-2020-16293 Vendor Advisory
- https://bugs.ghostscript.com/show_bug.cgi?id=701795 x_refsource_MISCExploitIssue TrackingVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1870231 Issue Tracking
- https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=7870f4951bcc6a153f317e3439e14d0e929fd231 x_refsource_MISC
- https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-16293
- https://security.gentoo.org/glsa/202008-20 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/4469-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2020-16293
- https://www.debian.org/security/2020/dsa-4748 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2020-16293 | Vendor Advisory | |
| https://bugs.ghostscript.com/show_bug.cgi?id=701795 | x_refsource_MISCExploitIssue TrackingVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1870231 | Issue Tracking | |
| https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=7870f4951bcc6a153f317e3439e14d0e929fd231 | x_refsource_MISC | |
| https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2020-16293 | ||
| https://security.gentoo.org/glsa/202008-20 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://usn.ubuntu.com/4469-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2020-16293 | ||
| https://www.debian.org/security/2020/dsa-4748 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.