Webcam Video Conference <= 4.91.8 - Unrestricted File Upload leading to Remote Code Execuction
Strategic Overview
- Status
- Patched in 4.91.9
- Affected Plugin
- Webcam Video Conference
- Affected Version
<= 4.91.8- CVSS
- 9.8Critical
- Weakness type
- CWE-434 · Unrestricted Upload of File with Dangerous Type
- CVE
CVE-2015-9271
At a glance
CVE-2015-9271 is a critical-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Webcam Video Conference WordPress plugin, affecting versions <= 4.91.8. 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 4.91.9; sites on affected versions should update now. Disclosed March 2015, reported by Larry W. Cashdollar.
Vulnerability Overview
The VideoWhisper videowhisper-video-conference-integration plugin 4.91.8 for WordPress allows remote attackers to execute arbitrary code because vc/vw_upload.php considers a file safe when "html" are the last four characters, as demonstrated by a .phtml file containing PHP code, a different vulnerability than CVE-2014-1905.
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-434: Unrestricted Upload of File with Dangerous Type
Webcam Video Conference <= 4.91.8 carries this weakness at html, and reaching it 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 Webcam Video Conference the fix is 4.91.9: builds <= 4.91.8 are affected, anything from 4.91.9 onward is not.
Remediation
Update to version 4.91.9, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Webcam Video Conference: 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: Webcam Video Conference 4.91.9 closes this, and updating the plugin is the step that ends it.
- Firewall
- Scanner
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Webcam Video Conference
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