CVE-2022-3393

Post to CSV by BestWebSoft <= 1.3.8 - Authenticated (Author+) CSV Injection

2022-10-03 00:00

Strategic Overview

Status: Patched in 1.3.9
Affected Plugin: Post to CSV by BestWebSoft
Affected Version: <= 1.3.8
CVSS: 6.8Medium
Weakness type: CWE-1236 · Improper Neutralization of Formula Elements in a CSV File
CVE: CVE-2022-3393

View all Post to CSV by BestWebSoft vulnerabilities

At a glance

CVE-2022-3393 is a medium-severity Improper Neutralization of Formula Elements in a CSV File vulnerability in the Post to CSV by BestWebSoft WordPress plugin, affecting versions <= 1.3.8. It carries a CVSS score of 6.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 1.3.9; sites on affected versions should update now. Disclosed October 2022, reported by Francesco Carlucci.

Vulnerability Overview

The Post to CSV by BestWebSoft plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.3.8. This allows author-level attackers to embed untrusted input into exported CSV files, which 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, with low attack complexity — no special timing or configuration is needed. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

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 1.3.9, or a newer patched version

How does WordSec protect against this?

An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Post to CSV by BestWebSoft 1.3.9 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-3393 https://www.wordfence.com/threat-intel/vulnerabilities/id/3be1a1af-baab-4e57-a2c7-5e6963f986cc https://nvd.nist.gov/vuln/detail/CVE-2022-3393

Related records

Same weakness class

7.4CVE-2023-36527: Post to CSV by BestWebSoft <= 1.4.0 CSV InjectionCVE-2023-36527

CVSS Vector

6.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionRequired
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/