CVE-2020-16293
Artifex Software GhostScript Null Pointer Dereference Denial of Service Vulnerability
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.
INFO
Published Date :
Aug. 13, 2020, 3:15 a.m.
Last Modified :
Nov. 7, 2023, 3:18 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2020-16293 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-16293
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-16293.
| URL | Resource |
|---|---|
| https://bugs.ghostscript.com/show_bug.cgi?id=701795 | Exploit Issue Tracking Vendor Advisory |
| https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=7870f4951bcc6a153f317e3439e14d0e929fd231 | |
| https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202008-20 | Third Party Advisory |
| https://usn.ubuntu.com/4469-1/ | Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4748 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVEs and Techniques used PDF as an attack vector.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-16293 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-16293 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=7870f4951bcc6a153f317e3439e14d0e929fd231 [No types assigned] Removed Reference MITRE https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=7870f4951bcc6a153f317e3439e14d0e929fd231 -
Modified Analysis by [email protected]
Aug. 24, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202008-20 No Types Assigned https://security.gentoo.org/glsa/202008-20 Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4469-1/ No Types Assigned https://usn.ubuntu.com/4469-1/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4748 No Types Assigned https://www.debian.org/security/2020/dsa-4748 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:artifex:ghostscript:9.50:*:*:*:*:*:*:* OR *cpe:2.3:a:artifex:ghostscript:*:*:*:*:*:*:*:* versions up to (excluding) 9.52 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
Aug. 31, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4469-1/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 30, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202008-20 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 26, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4748 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 20, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/08/msg00032.html [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 14, 2020
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Changed Reference Type https://bugs.ghostscript.com/show_bug.cgi?id=701795 No Types Assigned https://bugs.ghostscript.com/show_bug.cgi?id=701795 Exploit, Issue Tracking, Vendor Advisory Changed Reference Type https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=7870f4951bcc6a153f317e3439e14d0e929fd231 No Types Assigned https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=7870f4951bcc6a153f317e3439e14d0e929fd231 Patch, Vendor Advisory Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:a:artifex:ghostscript:9.50:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-16293 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-16293
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.39 }} 0.05%
score
0.73470
percentile