CVE-2023-36527

Post to CSV by BestWebSoft <= 1.4.0 - Authenticated (Author+) CSV Injection

2023-06-28 00:00

Strategic Overview

Status: Patched in 1.4.1
Affected Plugin: Post to CSV by BestWebSoft
Affected Version: <= 1.4.0
CVSS: 7.4High
Weakness type: CWE-1236 · Improper Neutralization of Formula Elements in a CSV File
CVE: CVE-2023-36527

View all Post to CSV by BestWebSoft vulnerabilities

At a glance

CVE-2023-36527 is a high-severity Improper Neutralization of Formula Elements in a CSV File vulnerability in the Post to CSV by BestWebSoft WordPress plugin, affecting versions <= 1.4.0. It carries a CVSS score of 7.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 1.4.1; sites on affected versions should update now. Disclosed June 2023, reported by Kévin Mosbahi (Mika).

Vulnerability Overview

The Post to CSV by BestWebSoft plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.4.0. This allows unauthenticated 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, and no interaction from a victim user.

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 1.4.1, 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 1.4.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-36527 https://www.wordfence.com/threat-intel/vulnerabilities/id/74f0af24-e4d9-4b89-b91e-c6ec3e3918e7 https://nvd.nist.gov/vuln/detail/CVE-2023-36527

Related records

Same weakness class

6.8CVE-2022-3393: Post to CSV by BestWebSoft <= 1.3.8 CSV InjectionCVE-2022-3393

CVSS Vector

7.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

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