CVE-2021-21042
Adobe Acrobat Reader DC Out-of-bounds Read Vulnerability
Description
Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability that could lead to arbitrary disclosure of information in the memory stack. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. 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. 7, 2023, 3:29 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-21042 has a 10 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-2021-21042
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-2021-21042.
| URL | Resource |
|---|---|
| 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).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
None
None
None
None
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JavaScript
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Exploit code for CVE-2021-21042
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-21042 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21042 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 CVSS V3 Adobe Systems Incorporated AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Removed CVSS V3.1 Adobe Systems Incorporated AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N -
Modified Analysis by [email protected]
Sep. 14, 2021
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:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 28, 2021
Action Type Old Value New Value Changed 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 an Out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to locally escalate privileges in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability that could lead to arbitrary disclosure of information in the memory stack. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Removed CVSS V3.1 Adobe Systems Incorporated AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Added CVSS V3.1 Adobe Systems Incorporated AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N -
CVE Modified by [email protected]
Jun. 11, 2021
Action Type Old Value New Value Changed Description Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability that could lead to arbitrary disclosure of information in the memory stack. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to locally escalate privileges in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file. -
Modified Analysis by [email protected]
Jun. 03, 2021
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 27, 2021
Action Type Old Value New Value Changed 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 an Out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to locally escalate privileges in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability that could lead to arbitrary disclosure of information in the memory stack. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Removed CVSS V3.1 Adobe Systems Incorporated AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Added CVSS V3.1 Adobe Systems Incorporated AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Removed CVSS V3.1 Reason C-Information leaked Removed CVSS V3.1 Reason AV-Applied AV:N due to network vector identified -
Reanalysis by [email protected]
May. 25, 2021
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N -
Reanalysis by [email protected]
May. 25, 2021
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N -
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:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N 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 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-2021-21042 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-2021-21042
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
4.36 }} 0.34%
score
0.92518
percentile