Description
In PHP before 5.6.28 and 7.x before 7.0.13, incorrect handling of various URI components in the URL parser could be used by attackers to bypass hostname-specific URL checks, as demonstrated by evil.example.com:80#@good.example.com/ and evil.example.com:80?@good.example.com/ inputs to the parse_url function (implemented in the php_url_parse_ex function in ext/standard/url.c).
Remediation
References
Related Vulnerabilities
SugarCRM Improper Input Validation Vulnerability (CVE-2012-0694)
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PHP NULL Pointer Dereference Vulnerability (CVE-2016-9934)
WordPress Plugin WooCommerce Remote Code Execution (4.0.1)
WordPress Plugin Companion Auto Update Multiple Vulnerabilities (3.2.0)