CVE-2023-22894: Strapi Cleartext Storage of Sensitive Information Vulnerability
Summary
Strapi through 4.7.1 allows unauthenticated attackers to discover sensitive user details for Strapi administrators and API users.
Details
Strapi through 4.7.1 allows unauthenticated attackers to discover sensitive user details for Strapi administrators and API users. The unauthenticated attacker can filter users by columns that contain sensitive information and infer the values by the changes in the API responses. An unauthenticated attacker can exploit this vulnerability to hijack Strapi administrator accounts and gain unauthorized Strapi Super Administrator access by leaking the password reset token and changing the admin password. This can be exploited on all Strapi versions <=4.7.1.
IoC
The exploitation of CVE-2023-22894 is easily detectable, since the payload is within the GET parameters and are normally included in request logs. The following regex pattern will extract requests that are exploiting this vulnerability to leak user's email, password and password reset token columns.
/(\[|%5B)\s(email|password|resetpasswordtoken|resetPasswordToken)\s(\]|%5D)/
You can search log files for this IoC by using the following grep command.
grep -iE '(\[|%5B)\s(email|password|resetpasswordtoken|resetPasswordToken)\s(\]|%5D)' $PATHTOLOGFILE
If the above regex pattern matches any lines in your log files, take extra precaution to look out for multiple requests that include password, resetpasswordtoken or resetPasswordToken. This would indicate that an attacker has leaked the password hashes and reset tokens on your Strapi server and you need to immediately start an incident response!
Impact
All Strapi users below 4.8.0
Other sources
Strapi contains a cleartext storage of sensitive information vulnerability that could allow attackers with access to the admin panel to discover sensitive user details via the query filter. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version. This vulnerability can be chained with CVE-2023-22621 to achieve remote code execution.
— CISA
Strapi through 4.5.5 allows attackers (with access to the admin panel) to discover sensitive user details by exploiting the query filter. The attacker can filter users by columns that contain sensitive information and infer a value from API responses. If the attacker has super admin access, then this can be exploited to discover the password hash and password reset token of all users. If the attacker has admin panel access to an account with permission to access the username and email of API users with a lower privileged role (e.g., Editor or Author), then this can be exploited to discover sensitive information for all API users but not other admin accounts.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
npm/@strapi/strapito a version that resolves this vulnerability.Fixed in 4.8.0 - Upgrade
Upgrade
Strapito a version that resolves this vulnerability.Fixed in 4.8.0 - Compensating control
Discontinue use of Strapi if mitigations are unavailable.
- Operational
Search Strapi request logs for password, reset_password_token, or resetPasswordToken query fields using grep -iE '(\[|%5B)\s*(email|password|reset_password_token|resetPasswordToken)\s*(\]|%5D)' $PATH_TO_LOG_FILE.
- Operational
If the log indicator matches, investigate multiple requests containing password, reset_password_token, or resetPasswordToken and immediately start incident response because password hashes and reset tokens may have been leaked.
Event History
Frequently Asked Questions
What is CVE-2023-22894?
CVE-2023-22894 is a vulnerability in Strapi versions up to 4.5.5 that allows attackers with access to the admin panel to discover sensitive user details.
How can an attacker exploit CVE-2023-22894?
An attacker can exploit CVE-2023-22894 by exploiting the query filter in Strapi and filtering users by columns that contain sensitive information.
What is the severity of CVE-2023-22894?
The severity of CVE-2023-22894 is medium with a severity value of 4.9.
How do I fix CVE-2023-22894?
To fix CVE-2023-22894, upgrade Strapi to version 4.8.0 or newer.
Where can I find more information about CVE-2023-22894?
You can find more information about CVE-2023-22894 on the following references: [GitHub](https://github.com/strapi/strapi/releases), [Strapi Blog](https://strapi.io/blog/security-disclosure-of-vulnerabilities-cve), [GhostCamm Blog](https://www.ghostccamm.com/blog/multi_strapi_vulns/).