CVE-2023-2734
Published: 25 May 2023
Summary
CVE-2023-2734 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 1.2% 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 3.9.1. The flaw stems from insufficient verification of the user identity supplied during cart synchronization requests made through the plugin's mobile REST API endpoints, as seen in the flutter-woo.php controller logic.
Unauthenticated attackers who possess a valid user ID can exploit the issue to log in as any existing user on the site, including administrators, without providing credentials. This grants them full access to the target's account privileges and data.
Advisories from Wordfence and the plugin's Trac changesets indicate that the vulnerability was addressed in a subsequent release, with code updates applied to strengthen user verification during API cart sync operations.
The associated EPSS score reached a peak of 0.7631 before receding to its current value of 0.7226.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-34195
Vulnerability details
The MStore API plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 3.9.1. This is due to insufficient verification on the user being supplied during the cart sync from mobile REST API request through the…
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plugin. This 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.