WP-Invoice – Web Invoice and Billing <= 4.1.0 - Privilege Escalation
Strategic Overview
- Status
- Patched in 4.1.1
- Affected Plugin
- WP-Invoice – Web Invoice and Billing
- Affected Version
< 4.1.1- CVSS
- 8.8High
- Weakness type
- CWE-269 · Improper Privilege Management
- CVE
CVE-2016-11011
At a glance
CVE-2016-11011 is a high-severity Improper Privilege Management vulnerability in the WP-Invoice WordPress plugin, affecting versions < 4.1.1. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). The issue is fixed in version 4.1.1; sites on affected versions should update now. Disclosed February 2016, reported by James Golovich.
Vulnerability Overview
The wp-invoice plugin before 4.1.1 for WordPress has wpi_update_user_option privilege escalation.
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 interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-269: Improper Privilege Management
Reaching this weakness in WP-Invoice < 4.1.1 takes a caller who can reach the endpoint. Improper privilege management means the code lets an account end up with capabilities its role should not have.
It converts a low-privileged account into an administrative one, which makes every other restriction on the site irrelevant. For WP-Invoice the fix is 4.1.1: builds < 4.1.1 are affected, anything from 4.1.1 onward is not.
Remediation
Update to version 4.1.1, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: WP-Invoice 4.1.1 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in WP-Invoice – Web Invoice and Billing
- 8.8CVE-2022-1617: WP-Invoice CSRF to Stored Cross-Site Scripting
CVE-2022-1617 - 6.5CVE-2016-11006: WP-Invoice Unauthorized Settings Change
CVE-2016-11006 - 5.3CVE-2016-11007: WP-Invoice – Web Invoice and Billing <= 4.1.0 IDOR
CVE-2016-11007 - 5.3CVE-2016-11010: WP-Invoice Missing Authorization
CVE-2016-11010 - 5.3CVE-2016-11009: WP-Invoice Missing Authorization
CVE-2016-11009 - 5.3CVE-2016-11008: WP-Invoice Missing Authorization
CVE-2016-11008
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