CVE-2023-0958

Inisev Plugins (Various Versions) - Missing Authorization on handle_installation function

2023-07-27 00:00
Chloe Chamberland

Strategic Overview

Status
Patched in 1.2.8
Affected Plugin
Backup Migration
Affected Version
<= 1.2.7
CVSS
4.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2023-0958
View all Backup Migration vulnerabilities

At a glance

CVE-2023-0958 is a medium-severity Missing Authorization vulnerability in the Backup Migration WordPress plugin, affecting versions <= 1.2.7. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 1.2.8; sites on affected versions should update now. Disclosed July 2023, reported by Chloe Chamberland.

Vulnerability Overview

Several plugins for WordPress by Inisev are vulnerable to unauthorized installation of plugins due to a missing capability check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for authenticated attackers with minimal permissions, such as subscribers, to install select plugins from Inisev on vulnerable sites. CVE-2023-38514 appears to be a duplicate of this vulnerability.

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-862: Missing Authorization

Reaching this weakness in Backup Migration <= 1.2.7 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 Backup Migration the fix is 1.2.8: builds <= 1.2.7 are affected, anything from 1.2.8 onward is not.

Remediation

Update to version 1.2.8, 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: Backup Migration 1.2.8 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-0958https://www.wordfence.com/threat-intel/vulnerabilities/id/cf7bdd0e-f3b3-4be5-8a30-2c6d9cb783a3https://nvd.nist.gov/vuln/detail/CVE-2023-0958

Related records

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