CVE-2019-14327

Custom Simple RSS < 2.0.7 - Cross-Site Request Forgery

2019-07-27 00:00

Strategic Overview

Status: Patched in 2.0.7
Affected Plugin: Custom Simple Rss
Affected Version: < 2.0.7
CVSS: 6.5Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2019-14327

View all Custom Simple Rss vulnerabilities

At a glance

CVE-2019-14327 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Custom Simple Rss WordPress plugin, affecting versions < 2.0.7. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 2.0.7; sites on affected versions should update now. Disclosed July 2019, reported by Mehdi Esmaeilpour.

Vulnerability Overview

A CSRF vulnerability in Settings form in the Custom Simple Rss plugin 2.0.6 for WordPress allows attackers to change the plugin settings.

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. A successful exploit has high impact on integrity.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Custom Simple Rss < 2.0.7 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 Custom Simple Rss the fix is 2.0.7: builds < 2.0.7 are affected, anything from 2.0.7 onward is not.

Remediation

Update to version 2.0.7, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Custom Simple Rss: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Custom Simple Rss 2.0.7 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2019-14327 https://www.wordfence.com/threat-intel/vulnerabilities/id/5ee333a6-6b4b-4abb-9fc9-1afd9598b321 https://nvd.nist.gov/vuln/detail/CVE-2019-14327

CVSS Vector

6.5

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

Base

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

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