CVE-2019-11185

The WP Live Chat Support Pro plugin through 8.0.26 for WordPress contains an arbitrary file upload vulnerability. This results from an incomplete patch for CVE-2018-12426. Arbitrary file upload is achieved by using a non-blacklisted executable file extension in conjunction with a whitelisted file extension, and prepending "magic bytes" to the payload to pass MIME checks. Specifically, an unauthenticated remote user submits a crafted file upload POST request to the REST api remote_upload endpoint. The file contains data that will fool the plugin's MIME check into classifying it as an image (which is a whitelisted file extension) and finally a trailing .phtml file extension.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://wpvulndb.com/vulnerabilities/9320	Exploit Third Party Advisory
https://wp-livechat.com/	Vendor Advisory
https://wordpress.org/plugins/wp-live-chat-support/#developers	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:wp-livechat:wp_live_chat_support_pro:*:*:*:*:*:wordpress:*:*

Information

Published : 2019-06-03 14:29

Updated : 2019-06-04 13:42

NVD link : CVE-2019-11185

Mitre link : CVE-2019-11185

JSON object : View

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

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Products Affected

wp-livechat

wp_live_chat_support_pro

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