// For flags

CVE-2021-44078

 

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in split_region in uc.c in Unicorn Engine before 2.0.0-rc5. It allows local attackers to escape the sandbox. An attacker must first obtain the ability to execute crafted code in the target sandbox in order to exploit this vulnerability. The specific flaw exists within the virtual memory manager. The issue results from the faulty comparison of GVA and GPA while calling uc_mem_map_ptr to free part of a claimed memory block. An attacker can leverage this vulnerability to escape the sandbox and execute arbitrary code on the host machine.

Se ha detectado un problema en la función split_region en el archivo uc.c en Unicorn Engine versiones anteriores a 2.0.0-rc5. Permite a atacantes locales escapar del sandbox. Un atacante debe obtener primero la capacidad de ejecutar código diseñado en el sandbox de destino para poder explotar esta vulnerabilidad. El fallo específico se presenta en el administrador de memoria virtual. El problema resulta de la comparación defectuosa de GVA y GPA mientras es llamado a uc_mem_map_ptr para liberar parte de un bloque de memoria reclamado. Un atacante puede aprovechar esta vulnerabilidad para escapar del sandbox y ejecutar código arbitrario en la máquina anfitriona

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-20 CVE Reserved
  • 2021-12-26 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-09-10 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-697: Incorrect Comparison
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Unicorn-engine
Search vendor "Unicorn-engine"
Unicorn Engine
Search vendor "Unicorn-engine" for product "Unicorn Engine"
<= 1.0.3
Search vendor "Unicorn-engine" for product "Unicorn Engine" and version " <= 1.0.3"
-
Affected
Unicorn-engine
Search vendor "Unicorn-engine"
Unicorn Engine
Search vendor "Unicorn-engine" for product "Unicorn Engine"
2.0.0
Search vendor "Unicorn-engine" for product "Unicorn Engine" and version "2.0.0"
rc1
Affected
Unicorn-engine
Search vendor "Unicorn-engine"
Unicorn Engine
Search vendor "Unicorn-engine" for product "Unicorn Engine"
2.0.0
Search vendor "Unicorn-engine" for product "Unicorn Engine" and version "2.0.0"
rc2
Affected
Unicorn-engine
Search vendor "Unicorn-engine"
Unicorn Engine
Search vendor "Unicorn-engine" for product "Unicorn Engine"
2.0.0
Search vendor "Unicorn-engine" for product "Unicorn Engine" and version "2.0.0"
rc3
Affected
Unicorn-engine
Search vendor "Unicorn-engine"
Unicorn Engine
Search vendor "Unicorn-engine" for product "Unicorn Engine"
2.0.0
Search vendor "Unicorn-engine" for product "Unicorn Engine" and version "2.0.0"
rc4
Affected