Advanced Contact form 7 DB <= 1.8.6 - Authenticated Arbitrary File Deletion

2022-02-22 00:00

Krzysztof Zając

Strategic Overview

Status

Patched in 1.8.7

Affected PluginAdvanced Contact form 7 DB

Affected Version< 1.8.7

CVSS8.8High

CVECVE-2021-24905

View all Advanced Contact form 7 DB vulnerabilities

Vulnerability Overview

The Advanced Contact form 7 DB WordPress plugin before 1.8.7 does not have authorisation nor CSRF checks in the acf7_db_edit_scr_file_delete AJAX action, and does not validate the file to be deleted, allowing any authenticated user to delete arbitrary files on the web server. For example, removing the wp-config.php allows attackers to trigger WordPress setup again, gain administrator privileges and execute arbitrary code or display arbitrary content to the users.

Technical Analysis

REMEDIATION: Update to version 1.8.7, or a newer patched version --- IDENTIFIER: CWE-863 (Incorrect Authorization) The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24905 https://www.wordfence.com/threat-intel/vulnerabilities/id/4891fd3f-563b-497a-a5d9-617f4862298b

CVSS Vector

8.8

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

Base

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

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