Strategic Overview
- Status
- Patched in 2.2.9
- Affected Plugin
- membermouse
- Affected Version
<= 2.2.8- CVSS
- 9.8Critical
- Weakness type
- CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
- CVE
CVE-2018-11309
At a glance
CVE-2018-11309 is a critical-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the membermouse WordPress plugin, affecting versions <= 2.2.8. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 2.2.9; sites on affected versions should update now. Disclosed May 2018, reported by Riccardo Ancarani.
Vulnerability Overview
Blind SQL injection in coupon_code in the MemberMouse plugin 2.2.8 and prior for WordPress allows an unauthenticated attacker to dump the WordPress MySQL database via an applyCoupon action in an admin-ajax.php request.
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, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Reaching this weakness in membermouse <= 2.2.8 takes a caller who can reach the endpoint. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.
A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. For membermouse the fix is 2.2.9: builds <= 2.2.8 are affected, anything from 2.2.9 onward is not.
Remediation
Update to version 2.2.9, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to membermouse: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: membermouse 2.2.9 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
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