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CVE-2021-34986

Quick assessment

Affected
Parallels Desktop
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Corel Parallels Desktop是加拿大Corel公司的一套适用于macOS平台的虚拟机软件。 Corel Parallels Desktop 16.5.0版本存在安全漏洞，该漏洞源于通过创建符号链接，攻击者可以滥用该服务来执行文件。

AI Predicted 7.8 Difficulty: Easy EPSS 0.27% · P19
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I. Basic Information for CVE-2021-34986

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.5.0 (49183). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Parallels Service. By creating a symbolic link, an attacker can abuse the service to execute a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13932.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
Corel Parallels Desktop 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Corel Parallels Desktop是加拿大Corel公司的一套适用于macOS平台的虚拟机软件。 Corel Parallels Desktop 16.5.0版本存在安全漏洞，该漏洞源于通过创建符号链接，攻击者可以滥用该服务来执行文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Parallels Desktop 16.5.0 (49183) -

II. Public POCs for CVE-2021-34986

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III. Intelligence Information for CVE-2021-34986

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Vendor Advisories for CVE-2021-34986 (1)

Other References for CVE-2021-34986 (1)

Same Patch Batch · Parallels · 2022-07-15 · 5 CVEs total

CVE-2021-34987 Corel Parallels Desktop 权限许可和访问控制问题漏洞
CVE-2022-34889 Corel Parallels Desktop 缓冲区错误漏洞
CVE-2022-34890 Corel Parallels Desktop 安全漏洞
CVE-2022-34891 Corel Parallels Desktop 安全漏洞

IV. Related Vulnerabilities

Same product: Desktop
Same vendor: Parallels
Same weakness: CWE-367

V. Comments for CVE-2021-34986

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