CVE-2023-6158

EventON - WordPress Virtual Event Calendar Plugin Pro <= 4.5.4 & Free <= 2.2.7 - Missing Authorization to Arbitrary Post Meta Update via evo_eventpost_update_meta

2024-01-09 00:00
Francesco Carlucci

Strategic Overview

Status
Patched in 4.5.5
Affected Plugin
EventON (Pro) - WordPress Virtual Event Calendar Plugin
Affected Version
<= 4.5.4
CVSS
6.5Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2023-6158
View all EventON (Pro) - WordPress Virtual Event Calendar Plugin vulnerabilities

At a glance

CVE-2023-6158 is a medium-severity Missing Authorization vulnerability in the EventON (Pro) - WordPress Virtual Event Calendar Plugin WordPress plugin, affecting versions <= 4.5.4. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.5.5; sites on affected versions should update now. Disclosed January 2024, reported by Francesco Carlucci.

Vulnerability Overview

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_update_meta function in all versions up to, and including, 4.5.4 (for Pro) and 2.2.7 (for free). This makes it possible for unauthenticated attackers to update and remove arbitrary post metadata. Note that certain parameters may allow for content injection. CVE-2024-0238 appears to be a duplicate of this issue.

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, and no interaction from a victim user.

CWE-862: Missing Authorization

Reaching this weakness in EventON (Pro) - WordPress Virtual Event Calendar Plugin <= 4.5.4 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For EventON (Pro) - WordPress Virtual Event Calendar Plugin the fix is 4.5.5: builds <= 4.5.4 are affected, anything from 4.5.5 onward is not.

Remediation

Update to version 4.5.5, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: EventON (Pro) - WordPress Virtual Event Calendar Plugin 4.5.5 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6158https://www.wordfence.com/threat-intel/vulnerabilities/id/19f94c4f-145b-4058-aabd-06525fce3ceahttps://nvd.nist.gov/vuln/detail/CVE-2023-6158

Related records

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