CVE-2022-4034

Appointment Hour Booking <= 1.3.72 - CSV Injection

2022-11-29 00:00

Strategic Overview

Status: Patched in 1.3.73
Affected Plugin: Appointment Hour Booking – Booking Calendar
Affected Version: <= 1.3.72
CVSS: 5.8Medium
Weakness type: CWE-1236 · Improper Neutralization of Formula Elements in a CSV File
CVE: CVE-2022-4034

View all Appointment Hour Booking – Booking Calendar vulnerabilities

At a glance

CVE-2022-4034 is a medium-severity Improper Neutralization of Formula Elements in a CSV File vulnerability in the Appointment Hour Booking WordPress plugin, affecting versions <= 1.3.72. It carries a CVSS score of 5.8 (reachable over the network). Exploitation requires no authentication. The issue is fixed in version 1.3.73; sites on affected versions should update now. Disclosed November 2022, reported by Luca Greeb.

Vulnerability Overview

The Appointment Hour Booking Plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.3.72. This makes it possible for unauthenticated attackers to embed untrusted input into content during booking creation that may be exported as a CSV file when a site's administrator exports booking details. This can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no privileges on the target site.

CWE-1236: Improper Neutralization of Formula Elements in a CSV File

The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product.

Remediation

Update to version 1.3.73, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Appointment Hour Booking: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Appointment Hour Booking 1.3.73 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-4034 https://www.wordfence.com/threat-intel/vulnerabilities/id/b3a77b7a-65ad-4334-99c9-92cc79e60bee https://nvd.nist.gov/vuln/detail/CVE-2022-4034

Related records

Other vulnerabilities in Appointment Hour Booking – Booking Calendar

CVSS Vector

5.8

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

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