UserPro <= 5.1.0 - Cross-Site Request Forgery to PHP Object Injection
Strategic Overview
- Status
- Patched in 5.1.1
- Affected Plugin
- UserPro - Community and User Profile WordPress Plugin
- Affected Version
<= 5.1.0- CVSS
- 8.8High
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE-2023-2497
At a glance
CVE-2023-2497 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the UserPro - Community and User Profile WordPress Plugin WordPress plugin, affecting versions <= 5.1.0. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 5.1.1; sites on affected versions should update now. Disclosed November 2023, reported by István Márton.
Vulnerability Overview
The UserPro plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 5.1.0. This is due to missing or incorrect nonce validation on the 'import_settings' function. This makes it possible for unauthenticated attackers to exploit PHP Object Injection due to the use of unserialize() on the user supplied parameter via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-352: Cross-Site Request Forgery (CSRF)
UserPro - Community and User Profile WordPress Plugin <= 5.1.0 carries this weakness at import_settings, and reaching it takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.
An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For UserPro - Community and User Profile WordPress Plugin the fix is 5.1.1: builds <= 5.1.0 are affected, anything from 5.1.1 onward is not.
Remediation
Update to version 5.1.1, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to UserPro - Community and User Profile WordPress Plugin: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: UserPro - Community and User Profile WordPress Plugin 5.1.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
- 8.8CVE-2023-2440: UserPro <= 5.1.1 CSRF to Privilege Escalation
CVE-2023-2440 - 6.3CVE-2023-6008: UserPro <= 5.1.1 Cross-Site Request Forgery
CVE-2023-6008 - 6.1CVE-2023-2447: UserPro <= 5.1.1 CSRF to Sensitive Information Exposure
CVE-2023-2447 - 6.1CVE-2023-2438: UserPro <= 5.1.0 CSRF to Stored Cross-Site Scripting
CVE-2023-2438
Other vulnerabilities in UserPro - Community and User Profile WordPress Plugin
- 10.0UserPro <= 4.9.20 Privilege Escalation
- 9.8CVE-2024-56214: Userpro <= 5.1.9 Local File Inclusion
CVE-2024-56214 - 9.8CVE-2024-35700: UserPro Account Takeover to Privilege Escalation
CVE-2024-35700 - 9.8CVE-2023-2437: UserPro <= 5.1.1 Authentication Bypass to Administrator
CVE-2023-2437 - 9.8CVE-2023-2449: UserPro <= 5.1.1 Insecure Password Reset Mechanism
CVE-2023-2449 - 9.8UserPro <= 4.9.27 Privilege Escalation
- 9.8CVE-2017-16562: UserPro <= 4.9.17 Authentication Bypass
CVE-2017-16562 - 8.8CVE-2023-6009: UserPro <= 5.1.4 Privilege Escalation
CVE-2023-6009
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