CVE-2022-41720

On Windows, restricted files can be accessed via os.DirFS and http.Dir. The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permit access to Windows device files under that root. For example, os.DirFS("C:/tmp").Open("COM1") opens the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory (the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. With fix applied, the behavior of os.DirFS("") has changed. Previously, an empty root was treated equivalently to "/", so os.DirFS("").Open("tmp") would open the path "/tmp". This now returns an error.

CVSS v3.0 7.5 HIGH

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://groups.google.com/g/golang-announce/c/L_3rmdT0BMU/m/yZDrXjIiBQAJ	Patch Release Notes Third Party Advisory
https://pkg.go.dev/vuln/GO-2022-1143	Patch Vendor Advisory
https://go.dev/cl/455716	Patch Vendor Advisory
https://go.dev/issue/56694	Issue Tracking Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go::::::::

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

Information

Published : 2022-12-07 09:15

Updated : 2022-12-12 06:58

NVD link : CVE-2022-41720

Mitre link : CVE-2022-41720

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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Products Affected

golang

go

microsoft

windows

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