CVE-2021-21796

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An exploitable use-after-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause an object containing the path to a document to be destroyed and then later reused, resulting in a use-after-free vulnerability, which can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger this vulnerability.

Se presenta una vulnerabilidad explotable de uso de memoria previamente liberada en la implementación de JavaScript de Nitro Pro PDF. Un documento especialmente diseñado puede causar la destrucción de un objeto que contiene la ruta de acceso a un documento y su posterior reuso, resultando en una vulnerabilidad de uso de memoria previamente liberada, que puede conllevar a una ejecución de código bajo el contexto de la aplicación. Un atacante puede convencer a un usuario de abrir un documento para desencadenar esta vulnerabilidad

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-04 CVE Reserved
2021-10-18 CVE Published
2024-07-03 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1265	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gonitro Search vendor "Gonitro"		Nitro Pro Search vendor "Gonitro" for product "Nitro Pro"				13.31.0.605 Search vendor "Gonitro" for product "Nitro Pro" and version "13.31.0.605"		-		Affected
Gonitro Search vendor "Gonitro"		Nitro Pro Search vendor "Gonitro" for product "Nitro Pro"				13.33.2.645 Search vendor "Gonitro" for product "Nitro Pro" and version "13.33.2.645"		-		Affected