// For flags

CVE-2021-21791

 

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An information disclosure vulnerability exists in the the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O read requests. A specially crafted I/O request packet (IRP) can lead to privileged reads in the context of a driver which can result in sensitive information disclosure from the kernel. The IN instruction can read two bytes from the given I/O device, potentially leaking sensitive device data to unprivileged users.

Se presenta una vulnerabilidad de divulgación de información en la manera en que el controlador IOBit Advanced SystemCare Ultimate 14.2.0.220, maneja las peticiones de lectura de I/O privilegiado. Un paquete de petición de I/O (IRP) especialmente diseñado puede conllevar a lecturas privilegiadas en el contexto de un controlador que puede resultar en la divulgación de información confidencial del kernel. La instrucción IN puede leer dos bytes del dispositivo de I/O dado, filtrando potencialmente datos confidenciales del dispositivo a usuarios no privilegiados

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-04 CVE Reserved
  • 2021-08-05 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-782: Exposed IOCTL with Insufficient Access Control
CAPEC
References (1)
URL Tag Source
URL Date SRC
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1255 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
Iobit
Search vendor "Iobit"
 Advanced Systemcare Ultimate
Search vendor "Iobit" for product "Advanced Systemcare Ultimate"
 14.2.0.220
Search vendor "Iobit" for product "Advanced Systemcare Ultimate" and version "14.2.0.220"
-
Affected