CVE-2024-27949

Image Optimizer, Resizer and CDN – Sirv <= 7.2.0 - Authenticated (Subscriber+) Server-Side Request Forgery

2024-03-01 00:00
CatFather

Strategic Overview

Status
Patched in 7.2.1
Affected Plugin
Image Optimizer, Resizer and CDN – Sirv
Affected Version
<= 7.2.0
CVSS
6.4Medium
Weakness type
CWE-918 · Server-Side Request Forgery (SSRF)
CVE
CVE-2024-27949
View all Image Optimizer, Resizer and CDN – Sirv vulnerabilities

At a glance

CVE-2024-27949 is a medium-severity Server-Side Request Forgery (SSRF) vulnerability in the Image Optimizer, Resizer and CDN WordPress plugin, affecting versions <= 7.2.0. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 7.2.1; sites on affected versions should update now. Disclosed March 2024, reported by CatFather.

Vulnerability Overview

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 7.2.0. This makes it possible for authenticated attackers, with subscriber-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

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-918: Server-Side Request Forgery (SSRF)

Reaching this weakness in Image Optimizer, Resizer and CDN <= 7.2.0 takes an account at Subscriber level or above. Server-side request forgery means the application fetches a URL supplied by the caller, turning the server into a proxy for requests the attacker could not make directly.

The request originates from inside the hosting network, which is how these flaws reach cloud metadata endpoints, internal admin panels and services that trust local traffic. For Image Optimizer, Resizer and CDN the fix is 7.2.1: builds <= 7.2.0 are affected, anything from 7.2.1 onward is not.

Remediation

Update to version 7.2.1, or a newer patched version

How does WordSec protect against this?

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Image Optimizer, Resizer and CDN 7.2.1 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-27949https://www.wordfence.com/threat-intel/vulnerabilities/id/d30cc136-ebde-4c76-9831-ffde79bf3c4ahttps://nvd.nist.gov/vuln/detail/CVE-2024-27949

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C