WP Offload SES Lite <= 1.4.4 - Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.4.5
- Affected Plugin
- WP Offload SES Lite
- Affected Version
<= 1.4.4- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24494
At a glance
CVE-2021-24494 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP Offload SES Lite WordPress plugin, affecting versions <= 1.4.4. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 1.4.5; sites on affected versions should update now. Disclosed June 2021, reported by Ionut Morosan.
Vulnerability Overview
The WP Offload SES Lite WordPress plugin before 1.4.5 did not escape some of the fields in the Activity page of the admin dashboard, such as the email's id, subject and recipient, which could lead to Stored Cross-Site Scripting issues when an attacker can control any of these fields, like the subject when filling a contact form for example. The XSS will be executed in the context of a logged in admin viewing the Activity tab of the plugin.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in WP Offload SES Lite <= 1.4.4 takes a caller who can reach the endpoint. 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 WP Offload SES Lite the fix is 1.4.5: builds <= 1.4.4 are affected, anything from 1.4.5 onward is not.
Remediation
Update to version 1.4.5, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to WP Offload SES Lite: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP Offload SES Lite 1.4.5 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in WP Offload SES Lite
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