UpdraftPlus WordPress Backup Plugin <= 1.9.50 - Nonce Leak to Authorization Bypass

2015-02-03 00:00

Marc-Alexandre Montpas

Strategic Overview

Status

Patched in 1.9.51

Affected PluginUpdraftPlus: WP Backup & Migration Plugin

Affected Version< 1.9.51

CVSS9.9Critical

CVEN/A

View all UpdraftPlus: WP Backup & Migration Plugin vulnerabilities

Vulnerability Overview

The UpdraftPlus WordPress Backup Plugin for WordPress is vulnerable to nonce leak which leads to authorization bypass in versions up to, and including, 1.9.50. This is due to incorrect use of several 'admin_action_' hooks. This makes it possible for authenticated attackers to arbitrarily upload files, download backups and retrieve secret keys.

Technical Analysis

REMEDIATION: Update to version 1.9.51, or a newer patched version --- IDENTIFIER: CWE-269 (Improper Privilege Management) The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/c75bfba9-b25a-4966-835c-8d22736de809

CVSS Vector

9.9

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

This record contains material that is subject to copyright

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/