Strategic Overview
- Status
- Patched in 1.2.33
- Affected Version
<= 1.2.32- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2018-7543
At a glance
CVE-2018-7543 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Duplicator WordPress plugin, affecting versions <= 1.2.32. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.2.33; sites on affected versions should update now. Disclosed March 2018.
Vulnerability Overview
Cross-site scripting (XSS) vulnerability in installer/build/view.step4.php of the SnapCreek Duplicator plugin 1.2.32 for WordPress allows remote attackers to inject arbitrary JavaScript or HTML via the json parameter.
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.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Duplicator <= 1.2.32 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 Duplicator the fix is 1.2.33: builds <= 1.2.32 are affected, anything from 1.2.33 onward is not.
Remediation
Update to version 1.2.33, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Duplicator: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Duplicator 1.2.33 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
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CVE-2022-2551 - 9.8CVE-2018-17207: Duplicator Info Disclosure
CVE-2018-17207 - 8.8Duplicator <= 0.5.14 SQL Injection
- 8.2CVE-2014-9262: Duplicator Arbitrary Backup Creation and Download
CVE-2014-9262 - 7.5CVE-2022-2552: Duplicator – WordPress Migration Plugin Info Disclosure
CVE-2022-2552 - 7.5CVE-2020-11738: Duplicator < 1.3.28 Directory Traversal
CVE-2020-11738
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