W3 Total Cache <= 0.9.4 - Server-Side Request Forgery leading to Host Information Disclosure

2016-10-31 00:00

Jouko Pynnöne

Strategic Overview

Status

Patched in 0.9.5

Affected PluginW3 Total Cache

Affected Version<= 0.9.4

CVSS8.6High

CVEN/A

View all W3 Total Cache vulnerabilities

Vulnerability Overview

The W3 Total Cache plugin for WordPress is vulnerable to Server-Side Request Forgery in versions up to, and including, 0.9.4. This is due to a minify function incorrectly restricting path input. This makes it possible for attackers to access restricted resources on private networks by using a vulnerable installation as a limited HTTP GET proxy.

Technical Analysis

REMEDIATION: Update to version 0.9.5, or a newer patched version --- IDENTIFIER: CWE-918 (Server-Side Request Forgery (SSRF)) The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/b09c6da0-14d8-4e44-95bd-b5b6b0df97e9

CVSS Vector

8.6

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone

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