CVE-2022-25599

Spiffy Calendar <= 4.9.0 - Event deletion via Cross-Site Request Forgery

2022-02-10 00:00

Strategic Overview

Status: Patched in 4.9.1
Affected Plugin: Spiffy Calendar
Affected Version: <= 4.9.0
CVSS: 5.4Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2022-25599

View all Spiffy Calendar vulnerabilities

At a glance

CVE-2022-25599 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Spiffy Calendar WordPress plugin, affecting versions <= 4.9.0. 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 4.9.1; sites on affected versions should update now. Disclosed February 2022, reported by Ngo Van Thien.

Vulnerability Overview

Cross-Site Request Forgery (CSRF) vulnerability leading to event deletion was discovered in Spiffy Calendar WordPress plugin (versions <= 4.9.0).

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 Spiffy Calendar <= 4.9.0 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 Spiffy Calendar the fix is 4.9.1: builds <= 4.9.0 are affected, anything from 4.9.1 onward is not.

Remediation

Update to version 4.9.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Spiffy Calendar: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Spiffy Calendar 4.9.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-25599 https://www.wordfence.com/threat-intel/vulnerabilities/id/ada3a69c-d113-4f92-b716-641bd5d20940 https://nvd.nist.gov/vuln/detail/CVE-2022-25599

Related records

Other vulnerabilities in Spiffy Calendar

CVSS Vector

5.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow

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