Blackhole for Bad Bots <= 3.3.1 - Arbitrary IP Address Blocking via IP Spoofing

2022-01-31 00:00

Daniel Ruf

Strategic Overview

Status

Patched in 3.3.2

Affected PluginBlackhole for Bad Bots

Affected Version< 3.3.2

CVSS9.1Critical

CVECVE-2022-1165

View all Blackhole for Bad Bots vulnerabilities

Vulnerability Overview

The Blackhole for Bad Bots WordPress plugin before 3.3.2 uses headers such as CF-CONNECTING-IP, CLIENT-IP etc to determine the IP address of requests hitting the blackhole URL, which allows them to be spoofed. This could result in blocking arbitrary IP addresses, such as legitimate/good search engine crawlers / bots. This could also be abused by competitors to cause damage related to visibility in search engines, can be used to bypass arbitrary blocks caused by this plugin, block any visitor or even the administrator and even more.

Technical Analysis

REMEDIATION: Update to version 3.3.2, or a newer patched version --- IDENTIFIER: CWE-639 (Authorization Bypass Through User-Controlled Key) The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

External References

https://www.cve.org/CVERecord?id=CVE-2022-1165 https://www.wordfence.com/threat-intel/vulnerabilities/id/a8447fa0-f994-4de3-b6e7-2fe61e06bed1

CVSS Vector

9.1

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

Base

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

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