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CVE-2021-3747— MacOS version of Multipass incorrect owner for application directory

Quick assessment

Affected
Canonical Multipass
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.

Multipass是一个适用于 Linux、Windows 和 MacOS 的轻量级 Vm 管理器。 Multipass 1.7.0版本的MacOS版本存在安全漏洞。

CVSS 8.8 · High EPSS 0.25% · P14

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-3747

Vulnerability Information
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Vulnerability Title
MacOS version of Multipass incorrect owner for application directory
Source: CVE Program / CVE List V5
Vulnerability Description
The MacOS version of Multipass, version 1.7.0, fixed in 1.7.2, accidentally installed the application directory with incorrect owner.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5
Vulnerability Title
Multipass 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Multipass是一个适用于 Linux、Windows 和 MacOS 的轻量级 Vm 管理器。 Multipass 1.7.0版本的MacOS版本存在安全漏洞。
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
Canonical Multipass 1.7 ~ 1.7.2 -

II. Public POCs for CVE-2021-3747

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III. Intelligence Information for CVE-2021-3747

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Other References for CVE-2021-3747 (1)

Same Patch Batch · Canonical · 2021-10-01 · 4 CVEs total

CVE-2021-3626 8.8 HIGH Windows version of Multipass unauthenticated localhost tcp control socket can perform moun
CVE-2021-3710 6.5 MEDIUM Apport info disclosure via path traversal bug in read_file
CVE-2021-3709 6.5 MEDIUM Apport file permission bypass through emacs byte compilation errors

IV. Related Vulnerabilities

Same product: Multipass
Same vendor: Canonical
Same weakness: CWE-732

V. Comments for CVE-2021-3747

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