Strategic Overview
- Status
- Patched in 2.4
- Affected Plugin
- Pixabay Images
- Affected Version
<= 2.3- CVSS
- 8.8High
- Weakness type
- CWE-434 · Unrestricted Upload of File with Dangerous Type
- CVE
CVE-2015-1376
At a glance
CVE-2015-1376 is a high-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Pixabay Images WordPress plugin, affecting versions <= 2.3. 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 2.4; sites on affected versions should update now. Disclosed January 2015, reported by Hans-Martin Muench.
Vulnerability Overview
pixabay-images.php in the Pixabay Images plugin before 2.4 for WordPress does not validate hostnames, which allows remote authenticated users to write to arbitrary files via an upload URL with a host other than pixabay.com.
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-434: Unrestricted Upload of File with Dangerous Type
Reaching this weakness in Pixabay Images <= 2.3 takes a caller who can reach the endpoint. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.
If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For Pixabay Images the fix is 2.4: builds <= 2.3 are affected, anything from 2.4 onward is not.
Remediation
Update to version 2.4, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Pixabay Images: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Pixabay Images 2.4 closes this, and updating the plugin is the step that ends it.
- Firewall
- Scanner
- Alerts
External References
Related records
Same weakness class
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