CyRC Vulnerability Advisory: Sensitive data exposure in JSON enables account compromise in Strapi

Affected software

CVE-2022-30617

• Strapi v3 up to v3.6.9
• Strapi v4 beta versions up to v4.0.0-beta.15 (Strapi v4.0.0 stable releases are not affected)

CVE-2022-30618

• Strapi v3 up to v3.6.9
• Strapi v4 up to v4.1.9

Impact

CVE-2022-30617
An authenticated user with access to the Strapi admin panel can view private and sensitive data, such as email and password reset tokens, for other admin panel users that have a relationship (e.g., created by, updated by) with content accessible to the authenticated user. For example, a low-privileged “author” role account can view these details in the JSON response for an “editor” or “super admin” that has updated one of the author’s blog posts. There are also many other scenarios where such details from other users can leak in the JSON response, either through a direct or indirect relationship. Access to this information enables a user to compromise other users’ accounts by successfully invoking the password reset workflow. In a worst-case scenario, a low-privileged user could get access to a “super admin” account with full control over the Strapi instance, and could read and modify any data as well as block access to both the admin panel and API by revoking privileges for all other users.

CVSS 3.1 base score: 8.8 (High)
CVSS 3.1 vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

CVE-2022-30618
An authenticated user with access to the Strapi admin panel can view private and sensitive data, such as email and password reset tokens, for API users if content types accessible to the authenticated user contain relationships to API users (from:users-permissions). There are many scenarios in which such details from API users can leak in the JSON response within the admin panel, either through a direct or indirect relationship. Access to this information enables a user to compromise these users’ accounts if the password reset API endpoints have been enabled. In a worst-case scenario, a low-privileged user could get access to a high-privileged API account, and could read and modify any data as well as block access to both the admin panel and API by revoking privileges for all other users.

CVSS 3.1 base score: 7.5 (High)
CVSS 3.1 vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Remediation

CVE-2022-30617

Strapi v3: Upgrade to Strapi v3.6.10 or later
Strapi v4: Upgrade to latest stable release build (this issue only affected prerelease versions)
See release notes for latest version available: https://github.com/strapi/strapi/releases

CVE-2022-30618

Strapi v3: Upgrade to Strapi v3.6.10 or later
Strapi v4: Upgrade to Strapi v4.1.10 or later
See release notes for latest version available: https://github.com/strapi/strapi/releases 

Discovery credit

As the researcher who discovered these vulnerabilities, I would like to commend Strapi team for their responsiveness and for addressing these vulnerabilities in a timely manner.