User Post Gallery - UPG <= 2.19 - Missing Authorization to Remote Command Execution

2022-12-26 00:00

cydave

Strategic Overview

Status

Unpatched

Affected PluginUser Post Gallery – UPG

Affected Version2.19

CVSS9.8Critical

CVECVE-2022-4060

View all User Post Gallery – UPG vulnerabilities

Vulnerability Overview

The User Post Gallery - UPG plugin for WordPress is vulnerable to authorization bypass which leads to remote command execution due to the use of a nopriv AJAX action and user supplied function calls and parameters in versions up to, and including 2.19. This makes it possible for unauthenticated attackers to call arbitrary PHP functions and perform actions like adding new files that can be webshells and updating the site's options to allow anyone to register as an administrator.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- IDENTIFIER: CWE-77 (Improper Neutralization of Special Elements used in a Command ('Command Injection')) The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

External References

https://www.cve.org/CVERecord?id=CVE-2022-4060 https://www.wordfence.com/threat-intel/vulnerabilities/id/19c370f1-322b-4c35-b100-244547373e1a

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

This record contains material that is subject to copyright

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

https://www.cve.org/Legal/TermsOfUse

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/