CVE-2023-2732
Published: 25 May 2023
Summary
CVE-2023-2732 is a critical-severity Authentication Bypass Using an Alternate Path or Channel (CWE-288) vulnerability in Inspireui Mstore Api. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 0.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The MStore API plugin for WordPress is affected by an authentication bypass vulnerability in versions up to and including 3.9.2. The flaw stems from insufficient verification of the user identity supplied in add listing REST API requests, which is tracked under CWE-288. This permits unauthenticated access to any valid user account on the site when the corresponding user ID is known.
Unauthenticated attackers can exploit the issue over the network by crafting a malicious REST API call that supplies an arbitrary user ID, resulting in a successful login as that user. With a CVSS score of 9.8, successful exploitation grants full control equivalent to the impersonated account, including administrator privileges that allow arbitrary site modification or data access.
Public references point to a patched version released via the WordPress plugin repository, with changeset details showing remediation in the listing-rest-api field handling code. The associated Wordfence advisory recommends immediate update to a fixed release to eliminate the bypass.
The EPSS score has reached a peak of 0.9179 with a current value of 0.9149, indicating sustained exploitation interest following disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-34193
Vulnerability details
The MStore API plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 3.9.2. This is due to insufficient verification on the user being supplied during the add listing REST API request through the plugin. This…
more
makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Authorizing remote access reduces the ability to bypass authentication via unauthorized alternate remote channels.
Users can identify logons via alternate paths or channels by reviewing the previous logon time.
Adaptive requirements can apply across access paths, reducing the ability to bypass authentication via alternate channels or paths.
Centralized IdPs close alternate authentication paths that enable bypass.
Enforces authentication for non-organizational users, making it harder to bypass via alternate paths or channels.
Requires authentication to occur exclusively over the isolated trusted path, directly preventing bypass via alternate or untrusted channels.