CVE-2022-2450

reSmush.it <= 0.4.3 - Missing Authorization

2022-08-11 00:00

Strategic Overview

Status: Patched in 0.4.4
Affected Plugin: reSmush.it : The original free image compressor and optimizer plugin
Affected Version: <= 0.4.3
CVSS: 7.3High
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2022-2450

View all reSmush.it : The original free image compressor and optimizer plugin vulnerabilities

At a glance

CVE-2022-2450 is a high-severity Missing Authorization vulnerability in the reSmush.it WordPress plugin, affecting versions <= 0.4.3. It carries a CVSS score of 7.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 0.4.4; sites on affected versions should update now. Disclosed August 2022, reported by Raad Haddad.

Vulnerability Overview

The reSmush.it plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on several AJAX actions in versions up to, and including, 0.4.3 . This makes it possible for unauthenticated attackers to download the logs of the plugin which can contain sensitive information.

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 reSmush.it <= 0.4.3 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 reSmush.it the fix is 0.4.4: builds <= 0.4.3 are affected, anything from 0.4.4 onward is not.

Remediation

Update to version 0.4.4, 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: reSmush.it 0.4.4 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-2450 https://www.wordfence.com/threat-intel/vulnerabilities/id/9c4e5c12-6f12-40cb-ac0a-389ad3715503 https://nvd.nist.gov/vuln/detail/CVE-2022-2450

Related records

Other vulnerabilities in reSmush.it : The original free image compressor and optimizer plugin

CVSS Vector

7.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

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