CVE-2015-9316

WP Fastest Cache < 0.8.4.9 - SQL Injection

2015-11-11 00:00

Strategic Overview

Status: Patched in 0.8.4.9
Affected Plugin: WP Fastest Cache – WordPress Cache Plugin
Affected Version: < 0.8.4.9
CVSS: 9.8Critical
Weakness type: CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE: CVE-2015-9316

View all WP Fastest Cache – WordPress Cache Plugin vulnerabilities

At a glance

CVE-2015-9316 is a critical-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the WP Fastest Cache WordPress plugin, affecting versions < 0.8.4.9. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 0.8.4.9; sites on affected versions should update now. Disclosed November 2015, reported by Kacper Szurek.

Vulnerability Overview

The WP Fastest Cache plugin before 0.8.4.9 for WordPress has SQL injection in wp-admin/admin-ajax.php?action=wpfc_wppolls_ajax_request via the poll_id parameter.

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 confidentiality, integrity, availability — full site compromise territory.

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Reaching this weakness in WP Fastest Cache < 0.8.4.9 takes a caller who can reach the endpoint. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.

A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. For WP Fastest Cache the fix is 0.8.4.9: builds < 0.8.4.9 are affected, anything from 0.8.4.9 onward is not.

Remediation

Update to version 0.8.4.9, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP Fastest Cache: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP Fastest Cache 0.8.4.9 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2015-9316 https://www.wordfence.com/threat-intel/vulnerabilities/id/c23c3b24-893f-4589-8fab-bd54259bd105 https://nvd.nist.gov/vuln/detail/CVE-2015-9316

Related records

Same weakness class

Other vulnerabilities in WP Fastest Cache – WordPress Cache Plugin

CVSS Vector

9.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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