CVE-2021-34987
Parallels Desktop HDAudio Buffer Overflow Local 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 16.5.1 (49187). An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the HDAudio virtual device. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-14969.
Esta vulnerabilidad permite a atacantes locales escalar privilegios en las instalaciones afectadas de Parallels Desktop versión 16.5.1 (49187). Para poder aprovechar esta vulnerabilidad, un atacante debe obtener primero la capacidad de ejecutar código con altos privilegios en el sistema huésped de destino. El fallo específico se presenta en el dispositivo virtual HDAudio. El problema resulta de la falta de comprobación apropiada de la longitud de los datos suministrados por el usuario antes de copiarlos en un búfer de longitud fija. Un atacante puede aprovechar esta vulnerabilidad para escalar privilegios y ejecutar código arbitrario en el contexto del hipervisor. Era ZDI-CAN-14969
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability.
The specific flaw exists within the HDAudio virtual device. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length 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
- 2021-06-17 CVE Reserved
- 2022-02-18 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (2)
URL | Tag | Source |
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https://www.zerodayinitiative.com/advisories/ZDI-22-386 | 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 | 2022-07-22 |
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" | 16.5.1 Search vendor "Parallels" for product "Parallels Desktop" and version "16.5.1" | macos |
Affected
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