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Description

(conda) Constructor is a tool that enables users to create installers for conda package collections. In versions 3.12.2 and below, the installation directory inherits permissions from its parent directory. Outside of restricted directories, the permissions are very permissive and often allow write access by authenticated users. Any logged in user can make modifications during the installation for both single-user and all-user installations. This constitutes a local attack vector if the installation is in a directory local users have access to. For single-user installations in a shared directory, these permissions persist after the installation. This issue is fixed in version 3.13.0.

PUBLISHED Reserved 2025-10-30 | Published 2025-11-07 | Updated 2025-11-07 | Assigner GitHub_M




HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-289: Authentication Bypass by Alternate Name

Product status

< 3.13.0
affected

References

github.com/...ructor/security/advisories/GHSA-vvpr-2qg4-2mrq

github.com/...ommit/c368383710a7c2b81ad1b0ecb9724b38d3577447

github.com/conda/constructor/releases/tag/3.13.0

cve.org (CVE-2025-64343)

nvd.nist.gov (CVE-2025-64343)

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