CVE-2015-9465

Yasr – Yet Another Stars Rating < 0.9.1 - Authenticated SQL Injection

2015-07-06 00:00

Strategic Overview

Status: Patched in 0.9.1
Affected Plugin: YASR – Yet Another Star Rating Plugin for WordPress
Affected Version: < 0.9.1
CVSS: 8.8High
Weakness type: CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE: CVE-2015-9465

View all YASR – Yet Another Star Rating Plugin for WordPress vulnerabilities

At a glance

CVE-2015-9465 is a high-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the YASR WordPress plugin, affecting versions < 0.9.1. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account. The issue is fixed in version 0.9.1; sites on affected versions should update now. Disclosed July 2015, reported by Marcin Probola.

Vulnerability Overview

The yet-another-stars-rating plugin before 0.9.1 for WordPress has yasr_get_multi_set_values_and_field SQL injection via the set_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 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 YASR < 0.9.1 takes any authenticated account. 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 YASR the fix is 0.9.1: builds < 0.9.1 are affected, anything from 0.9.1 onward is not.

Remediation

Update to version 0.9.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to YASR: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: YASR 0.9.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2015-9465 https://www.wordfence.com/threat-intel/vulnerabilities/id/25a25dae-578b-40d6-95c3-8428ca545ac3 https://nvd.nist.gov/vuln/detail/CVE-2015-9465

Related records

Other vulnerabilities in YASR – Yet Another Star Rating Plugin for WordPress

CVSS Vector

8.8

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

Base

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

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