CVE-2021-35984

Adobe Acrobat Pro DC PDFLibTool Null Pointer Dereference Bug

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Null pointer dereference vulnerability. An authenticated attacker could leverage this vulnerability achieve an application denial-of-service in the context of the current user. Exploitation of this issue does not requires user interaction.

Acrobat Reader DC versiones 2021.005.20054 (y anteriores), 2020.004.30005 (y anteriores), y 2017.011.30197 (y anteriores), están afectadas por una vulnerabilidad de desreferencia de puntero Null. Un atacante autenticado podría aprovechar esta vulnerabilidad para lograr una denegación de servicio de la aplicación en el contexto del usuario actual. Una explotación de este problema no requiere una interacción del usuario.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-30 CVE Reserved
2021-08-20 CVE Published
2023-03-13 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://helpx.adobe.com/security/products/acrobat/apsb21-51.html	2021-09-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Adobe Search vendor "Adobe"		Acrobat Dc Search vendor "Adobe" for product "Acrobat Dc"				>= 15.008.20082 <= 21.005.20054 Search vendor "Adobe" for product "Acrobat Dc" and version " >= 15.008.20082 <= 21.005.20054"		continuous		Affected
Adobe Search vendor "Adobe"		Acrobat Dc Search vendor "Adobe" for product "Acrobat Dc"				>= 17.011.30059 <= 17.011.30197 Search vendor "Adobe" for product "Acrobat Dc" and version " >= 17.011.30059 <= 17.011.30197"		classic		Affected
Adobe Search vendor "Adobe"		Acrobat Dc Search vendor "Adobe" for product "Acrobat Dc"				>= 20.001.30005 <= 20.004.30005 Search vendor "Adobe" for product "Acrobat Dc" and version " >= 20.001.30005 <= 20.004.30005"		classic		Affected
Adobe Search vendor "Adobe"		Acrobat Reader Dc Search vendor "Adobe" for product "Acrobat Reader Dc"				>= 15.008.20082 <= 21.005.20054 Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 15.008.20082 <= 21.005.20054"		continuous		Affected
Adobe Search vendor "Adobe"		Acrobat Reader Dc Search vendor "Adobe" for product "Acrobat Reader Dc"				>= 17.011.30059 <= 17.011.30197 Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 17.011.30059 <= 17.011.30197"		classic		Affected
Adobe Search vendor "Adobe"		Acrobat Reader Dc Search vendor "Adobe" for product "Acrobat Reader Dc"				>= 20.001.30005 <= 20.004.30005 Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 20.001.30005 <= 20.004.30005"		classic		Affected