CVE-2021-31420
Parallels Desktop Toolgate Stack-based Buffer Overflow Privilege Escalation Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.0-48950. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate component. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-12220.
Esta vulnerabilidad permite a atacantes locales escalar privilegios en las instalaciones afectadas de Parallels Desktop versión 16.1.0-48950. Un atacante primero debe obtener la capacidad de ejecutar código poco privilegiado en el sistema invitado objetivo para explotar esta vulnerabilidad. El fallo específico se presenta dentro del componente Toolgate. El problema es debido a una falta de comprobación apropiada de la longitud de los datos suministrados por el usuario antes de copiarlos en un búfer en la región stack de la memoria de longitud fija. Un atacante puede aprovechar esta vulnerabilidad para escalar privilegios y ejecutar código arbitrario en el contexto del hypervisor. Fue ZDI-CAN-12220
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability.
The specific flaw exists within the Toolgate component. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-04-16 CVE Reserved
- 2021-04-21 CVE Published
- 2024-08-03 CVE Updated
- 2024-09-01 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-121: Stack-based Buffer Overflow
CAPEC
References (2)
URL | Tag | Source |
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https://www.zerodayinitiative.com/advisories/ZDI-21-428 | Third Party Advisory |
URL | Date | SRC |
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URL | Date | SRC |
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URL | Date | SRC |
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https://kb.parallels.com/en/125013 | 2021-05-06 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Parallels Search vendor "Parallels" | Parallels Desktop Search vendor "Parallels" for product "Parallels Desktop" | 16.1.0-48950 Search vendor "Parallels" for product "Parallels Desktop" and version "16.1.0-48950" | - |
Affected
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