CVE-2023-0557

ContentStudio <= 1.2.5 - Information Exposure

2023-01-27 00:00

Strategic Overview

Status: Patched in 1.2.6
Affected Plugin: ContentStudio
Affected Version: <= 1.2.5
CVSS: 7.5High
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2023-0557

At a glance

CVE-2023-0557 is a high-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the ContentStudio WordPress plugin, affecting versions <= 1.2.5. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 1.2.6; sites on affected versions should update now. Disclosed January 2023, reported by Chloe Chamberland.

Vulnerability Overview

The ContentStudio plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.2.5. This could allow unauthenticated attackers to obtain a nonce needed for the creation of posts.

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. A successful exploit has high impact on integrity.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Reaching this weakness in ContentStudio <= 1.2.5 takes a caller who can reach the endpoint. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For ContentStudio the fix is 1.2.6: builds <= 1.2.5 are affected, anything from 1.2.6 onward is not.

Remediation

Update to version 1.2.6, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: ContentStudio 1.2.6 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-0557 https://www.wordfence.com/threat-intel/vulnerabilities/id/62eb136f-3cb0-40dc-a154-015a7fa1077b https://nvd.nist.gov/vuln/detail/CVE-2023-0557

Related records

CVSS Vector

7.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone

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