CVE-2021-21017
Adobe Acrobat and Reader Heap-based Buffer Overflo - [Actively Exploited]
Description
Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a heap-based buffer overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
INFO
Published Date :
Feb. 11, 2021, 8:15 p.m.
Last Modified :
Nov. 21, 2024, 5:47 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Acrobat Acrobat and Reader contain a heap-based buffer overflow vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.
Apply updates per vendor instructions.
https://nvd.nist.gov/vuln/detail/CVE-2021-21017
Public PoC/Exploit Available at Github
CVE-2021-21017 has a 15 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-2021-21017
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-2021-21017.
| URL | Resource |
|---|---|
| https://helpx.adobe.com/security/products/acrobat/apsb21-09.html | Vendor Advisory |
| https://helpx.adobe.com/security/products/acrobat/apsb21-09.html | Vendor 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).
A super simple Cisa KEV lookup CLI tool leveraging DuckDB
Python
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
Manage OWASP Dependency-Track policy idempotent.
Makefile Go Dockerfile
None
None
None
Python HTML
None
None
Набор скриптов для парсинга агрегаторов уязвимостей и выгрузки информации в YouTrack
Python
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
None
JavaScript
Openvas XML Report Converter is a flask-based microweb page that helps using openvasreporting to convert xml reports exported from Greenbone Security Assistant into xlsx workbooks, docx documents or csv files.
flask openvasreporting dropzone flask-session bootstrap-flask
Python CSS JavaScript HTML
None
None
JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-21017 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21017 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://helpx.adobe.com/security/products/acrobat/apsb21-09.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Aug. 05, 2022
Action Type Old Value New Value -
CPE Deprecation Remap by [email protected]
Sep. 08, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:apple:mac_os:-:*:*:*:*:*:*:* OR *cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Feb. 12, 2021
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:P/I:P/A:P) Changed Reference Type https://helpx.adobe.com/security/products/acrobat/apsb21-09.html No Types Assigned https://helpx.adobe.com/security/products/acrobat/apsb21-09.html Vendor Advisory Added CWE NIST CWE-787 Added CPE Configuration AND OR *cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* versions from (including) 17.0 up to (including) 17.011.30188 *cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* versions from (including) 20.0 up to (including) 20.001.30018 *cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* versions up to (including) 20.013.20074 *cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* versions from (including) 17.0 up to (including) 17.011.30188 *cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* versions from (including) 20.0 up to (including) 20.001.300183 *cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* versions up to (including) 20.013.20074 OR cpe:2.3:o:apple:mac_os:-:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21017 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-2021-21017
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
8.87 }} -51.49%
score
0.94571
percentile