CVE-2020-36773
Artifex Ghostscript Use After Free
Description
Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite) because a single character code in a PDF document can map to more than one Unicode code point (e.g., for a ligature).
INFO
Published Date :
Feb. 4, 2024, 6:16 p.m.
Last Modified :
Nov. 21, 2024, 5:30 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
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-2020-36773.
| URL | Resource |
|---|---|
| https://bugs.ghostscript.com/show_bug.cgi?id=702229 | Issue Tracking Patch |
| https://bugzilla.opensuse.org/show_bug.cgi?id=1177922 | Issue Tracking |
| https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874 | Broken Link |
| https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530 | Release Notes |
| https://bugs.ghostscript.com/show_bug.cgi?id=702229 | Issue Tracking Patch |
| https://bugzilla.opensuse.org/show_bug.cgi?id=1177922 | Issue Tracking |
| https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874 | Broken Link |
| https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530 | Release Notes |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-36773 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-36773 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://bugs.ghostscript.com/show_bug.cgi?id=702229 Added Reference https://bugzilla.opensuse.org/show_bug.cgi?id=1177922 Added Reference https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874 Added Reference https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Mar. 04, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:artifex:ghostscript:*:*:*:*:*:*:*:* versions up to (excluding) 9.53.0 OR *cpe:2.3:a:artifex:ghostscript:9.51:*:*:*:*:*:*:* *cpe:2.3:a:artifex:ghostscript:9.52:*:*:*:*:*:*:* *cpe:2.3:a:artifex:ghostscript:9.52.1:*:*:*:*:*:*:* *cpe:2.3:a:artifex:ghostscript:9.53.0:rc1:*:*:*:*:*:* *cpe:2.3:a:artifex:ghostscript:9.53.0:rc2:*:*:*:*:*:* -
Initial Analysis by [email protected]
Feb. 13, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugs.ghostscript.com/show_bug.cgi?id=702229 No Types Assigned https://bugs.ghostscript.com/show_bug.cgi?id=702229 Issue Tracking, Patch Changed Reference Type https://bugzilla.opensuse.org/show_bug.cgi?id=1177922 No Types Assigned https://bugzilla.opensuse.org/show_bug.cgi?id=1177922 Issue Tracking Changed Reference Type https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874 No Types Assigned https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874 Broken Link Changed Reference Type https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530 No Types Assigned https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530 Release Notes Added CWE NIST CWE-787 Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:a:artifex:ghostscript:*:*:*:*:*:*:*:* versions up to (excluding) 9.53.0 -
CVE Received by [email protected]
Feb. 04, 2024
Action Type Old Value New Value Added Description Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite) because a single character code in a PDF document can map to more than one Unicode code point (e.g., for a ligature). Added Reference MITRE https://bugs.ghostscript.com/show_bug.cgi?id=702229 [No types assigned] Added Reference MITRE https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874 [No types assigned] Added Reference MITRE https://bugzilla.opensuse.org/show_bug.cgi?id=1177922 [No types assigned] Added Reference MITRE https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-36773 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-2020-36773
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.23495
percentile