Link Juice Keeper <= 2.0.2 - Authenticated(Admin+) Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 2.0.3
- Affected Plugin
- Link Juice Keeper
- Affected Version
<= 2.0.2- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2023-25793
At a glance
CVE-2023-25793 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Link Juice Keeper WordPress plugin, affecting versions <= 2.0.2. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Admin level or above. The issue is fixed in version 2.0.3; sites on affected versions should update now. Disclosed February 2023, reported by Abdi Pranata.
Vulnerability Overview
The Link Juice Keeper plugin for WordPress is vulnerable to stored cross-site scripting in versions up to, and including, 2.0.2 via the 'redirect_link' and 'notify_to' options due to insufficient input sanitization and output escaping. This allows authenticated attackers with administrator-level capabilities to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Note that this primarily impacts multi-site installations and installations where unfiltered_html has been disabled.
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.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Link Juice Keeper <= 2.0.2 carries this weakness at redirect_link, and reaching it takes an account at Admin level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Link Juice Keeper the fix is 2.0.3: builds <= 2.0.2 are affected, anything from 2.0.3 onward is not.
Remediation
Update to version 2.0.3, or a newer patched version
How does WordSec protect against this?
An attacker needs Admin access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Link Juice Keeper 2.0.3 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C