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CVE-2021-34855

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 中存在信息泄露漏洞，该漏洞源于产品没有正确初始化Toolgate组件的内存。本地攻击者可通过该漏洞获得敏感信息的访问权限。以下产品及版本受到影响：

AI Predicted 7.8 Difficulty: Hard EPSS 0.27% · P17

Possible ATT&CK Techniques 1 AI

T1003 · OS Credential Dumping
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I. Basic Information for CVE-2021-34855

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop 16.1.3 (49160). 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 initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13592.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对未经初始化资源的使用
Source: CVE Program / CVE List V5
Vulnerability Title
Corel Parallels Desktop 信息泄露漏洞
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 中存在信息泄露漏洞，该漏洞源于产品没有正确初始化Toolgate组件的内存。本地攻击者可通过该漏洞获得敏感信息的访问权限。以下产品及版本受到影响：
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 16.1.3 (49160) -

II. Public POCs for CVE-2021-34855

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III. Intelligence Information for CVE-2021-34855

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Vendor Advisories for CVE-2021-34855 (1)

Other References for CVE-2021-34855 (1)

Same Patch Batch · Parallels · 2021-10-25 · 5 CVEs total

CVE-2021-34854 Corel Parallels Desktop 安全漏洞
CVE-2021-34856 Corel Parallels Desktop 缓冲区错误漏洞
CVE-2021-34857 Corel Parallels Desktop 缓冲区错误漏洞
CVE-2021-34864 Corel Parallels Desktop 安全漏洞

IV. Related Vulnerabilities

Same product: Desktop
Same vendor: Parallels
Same weakness: CWE-908

V. Comments for CVE-2021-34855

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