CVE-2017-17672

Current Description

In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's cacheTemplates() function, which is a publicly exposed API. This is exploited with the templateidlist parameter to ajax/api/template/cacheTemplates.

Basic Data

Published	December 14, 2017
Last Modified	January 02, 2018
Assigner	cve@mitre.org
Data Type	CVE
Data Format	MITRE
Data Version	4.0
Problem Type	CWE-502
CVE Data Version	4.0

Base Metric V2

CVSS 2 - Version	2.0
CVSS 2 - Vector String	AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS 2 - Access Vector	NETWORK
CVSS 2 - Access Complexity	LOW
CVSS 2 - Authentication	NONE
CVSS 2 - Confidentiality Impact	PARTIAL
CVSS 2 - Availability Impact	PARTIAL
CVSS 2 - Base Score	7.5
Severity	HIGH
Exploitability Score	10.0
Impact Score	6.4
Obtain All Privilege	false
Obtain User Privilege	false
Obtain Other Privilege	false

Base Metric V3

CVSS 3 - Version	3.0
CVSS 3 - Vector String	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3 - Attack Vector	NETWORK
CVSS 3 - Attack Complexity	LOW
CVSS 3 - Privileges Required	NONE
CVSS 3 - User Interaction	NONE
CVSS 3 - Scope	UNCHANGED
CVSS 3 - Confidentiality Impact	HIGH
CVSS 3 - Integrity Impact	HIGH
CVSS 3 - Availability Impact	HIGH
CVSS 3 - Base Score	9.8
CVSS 3 - Base Severity	CRITICAL
Exploitability Score	3.9
Base Severity	CRITICAL

Configurations

Vulnerable Software List

Vendor	Product	Versions
Vbulletin	Vbulletin	*, 5.0.0

References