CVE Vulnerabilities

CVE-2021-33038

Incorrect Default Permissions

Published: May 26, 2021 | Modified: Jun 28, 2022
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing lists archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.

Weakness

During installation, installed file permissions are set to allow anyone to modify those files.

Affected Software

Name Vendor Start Version End Version
Hyperkitty Hyperkitty_project * 1.3.4 (including)
Hyperkitty Ubuntu bionic *
Hyperkitty Ubuntu groovy *
Hyperkitty Ubuntu hirsute *
Hyperkitty Ubuntu impish *
Hyperkitty Ubuntu kinetic *
Hyperkitty Ubuntu lunar *
Hyperkitty Ubuntu mantic *
Hyperkitty Ubuntu trusty *
Hyperkitty Ubuntu xenial *

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References