TS Poll – Best Poll Plugin for WordPress <1.3.4 - Missing Authorization
Strategic Overview
- Status
- Patched in 1.3.4
- Affected Plugin
- TS Poll – Survey, Versus Poll, Image Poll, Video Poll
- Affected Version
< 1.3.4- CVSS
- 9.8Critical
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2020-11673
At a glance
CVE-2020-11673 is a critical-severity Missing Authorization vulnerability in the TS Poll WordPress plugin, affecting versions < 1.3.4. 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 1.3.4; sites on affected versions should update now. Disclosed April 2020.
Vulnerability Overview
The TS Poll – Best Poll Plugin for WordPress plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the 'wp_ajax_nopriv' function in versions up to, and including, 1.3.4. This makes it possible for unauthenticated attackers to to manipulate polls, e.g., delete, clone, or view a hidden poll.
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-862: Missing Authorization
TS Poll < 1.3.4 carries this weakness at wp_ajax_nopriv, and reaching it takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For TS Poll the fix is 1.3.4: builds < 1.3.4 are affected, anything from 1.3.4 onward is not.
Remediation
Update to version 1.3.4, 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: TS Poll 1.3.4 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in TS Poll – Survey, Versus Poll, Image Poll, Video Poll
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