CVE-2015-9465 in yet-another-stars-rating Plugin
Summary
by MITRE
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.
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Analysis
by VulDB Data Team • 01/07/2024
The CVE-2015-9465 vulnerability represents a critical sql injection flaw within the yet-another-stars-rating wordpress plugin version 0.9.0 and earlier. This vulnerability specifically targets the yasr_get_multi_set_values_and_field function which processes user input through the set_id parameter without adequate sanitization or validation. The affected plugin, designed to provide star rating functionality for wordpress sites, creates an attack surface where malicious actors can manipulate database queries by injecting crafted sql commands through the vulnerable parameter.
The technical exploitation of this vulnerability occurs when the plugin fails to properly escape or validate the set_id input parameter before incorporating it into sql queries. This allows attackers to construct malicious sql payloads that can be executed within the database context of the wordpress installation. The vulnerability stems from inadequate input validation practices and demonstrates poor secure coding principles that violate fundamental security guidelines. According to CWE classification, this maps to CWE-89: Improper Neutralization of Special Elements used in an SQL Command, which specifically addresses sql injection vulnerabilities arising from insufficient input sanitization.
The operational impact of this vulnerability extends beyond simple data theft or modification. Attackers can potentially execute arbitrary sql commands on the affected wordpress database, leading to complete database compromise, data exfiltration, or even privilege escalation within the wordpress environment. The vulnerability affects wordpress installations that use the specific plugin version, creating widespread risk across numerous websites that have not updated to the patched version 0.9.1. This type of vulnerability aligns with ATT&CK technique T1071.004: Application Layer Protocol: DNS, as attackers may use sql injection to establish persistent access or exfiltrate data through database queries.
Mitigation strategies for CVE-2015-9465 require immediate plugin updates to version 0.9.1 or later, which includes proper input validation and sanitization for the set_id parameter. System administrators should also implement web application firewalls with sql injection detection capabilities, monitor database query logs for suspicious activity, and conduct regular security audits of installed wordpress plugins. Additionally, the principle of least privilege should be applied to database accounts used by wordpress, limiting their permissions to only necessary operations. Organizations should also consider implementing automated patch management systems to ensure timely updates of vulnerable components and maintain comprehensive backup procedures to recover from potential compromise scenarios.