CVE-2023-26535

Sheets To WP Table Live Sync <= 2.12.15 - Cross-Site Request Forgery

2023-02-27 00:00

Strategic Overview

Status: Patched in 2.13.0
Affected Plugin: FlexTable – Data Table Sync with Google Sheets
Affected Version: <= 2.12.15
CVSS: 5.4Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2023-26535

View all FlexTable – Data Table Sync with Google Sheets vulnerabilities

At a glance

CVE-2023-26535 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the FlexTable WordPress plugin, affecting versions <= 2.12.15. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.13.0; sites on affected versions should update now. Disclosed February 2023, reported by Kévin Mosbahi (Mika).

Vulnerability Overview

The Sheets To WP Table Live Sync plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.12.15. This is due to missing or incorrect nonce validation. This makes it possible for unauthenticated attackers to perform an unknown action granted they can trick a site administrator into performing an action such as clicking on a link.

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 privileges on the target site.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in FlexTable <= 2.12.15 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For FlexTable the fix is 2.13.0: builds <= 2.12.15 are affected, anything from 2.13.0 onward is not.

Remediation

Update to version 2.13.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to FlexTable: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: FlexTable 2.13.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-26535 https://www.wordfence.com/threat-intel/vulnerabilities/id/f70221e6-59a4-4151-9688-f06e194f51ac https://nvd.nist.gov/vuln/detail/CVE-2023-26535

Related records

Same weakness class

4.3CVE-2022-47150: Appsero <= 1.2.0 Cross-Site Request ForgeryCVE-2022-47150

Other vulnerabilities in FlexTable – Data Table Sync with Google Sheets

CVSS Vector

5.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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