Arbitrary file upload in jQuery File Upload plugin



Published: 2018-10-19
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2018-9206
CWE ID CWE-434
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
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jQuery File Upload
Web applications / JS libraries

Vendor blueimp

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Arbitrary file upload

Risk: Critical

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]

CVE-ID: CVE-2018-9206

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists in the plugin's source code that handles file uploads to PHP servers due to software allows upload of arbitrary files to the system. A remote unauthenticated attacker can upload arbitrary .htaccess file to impose security restrictions to its upload folder and upload backdoors and web shells.

Note: The vulnerability has been actively exploited for at least 3 years.

Mitigation

Update to version 9.22.1 or later.

Vulnerable software versions

jQuery File Upload: 8.1.0, 8.2.1, 8.3.0, 8.3.1, 8.3.2, 8.4.0, 8.4.1, 8.4.2, 8.4.3, 8.5.0, 8.5.1, 8.6.0, 8.6.1, 8.7.0, 8.7.1, 8.8.2, 8.8.4, 8.8.5, 8.8.7, 8.9.0, 9.0.0, 9.0.1, 9.0.2, 9.1.0, 9.2.0, 9.2.1, 9.3.0, 9.4.0, 9.4.1, 9.4.2, 9.5.0, 9.5.1, 9.5.2, 9.5.3, 9.5.4, 9.5.5, 9.5.6, 9.5.7, 9.5.8, 9.6.0, 9.7.0, 9.7.1, 9.7.2, 9.8.0, 9.8.1, 9.9.0, 9.9.1, 9.9.2, 9.9.3, 9.9.4, 9.10.0, 9.10.1, 9.10.2, 9.10.3, 9.10.4, 9.10.5, 9.10.6, 9.10.7, 9.11.0, 9.11.1, 9.11.2, 9.12.0, 9.12.1, 9.12.2, 9.12.3, 9.12.4, 9.12.5, 9.12.6, 9.13.0, 9.13.1, 9.14.0, 9.14.1, 9.14.2, 9.15.0, 9.16.0, 9.17.0, 9.18.0, 9.19.0, 9.19.1, 9.19.2, 9.19.3, 9.20.0, 9.21.0, 9.22.0

CPE External links

http://www.vapidlabs.com/advisory.php?v=204

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.



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