Issues in class-widget-cache.php (master) - Issues in master - Rarst/fragment-cache - Measure and Improve Code Quality continuously with Scrutinizer

Issues (10)

Security Analysis no request data

Cross-Site Scripting

Cross-Site Scripting enables an attacker to inject code into the response of a web-request that is viewed by other users. It can for example be used to bypass access controls, or even to take over other users' accounts.

File Exposure

File Exposure allows an attacker to gain access to local files that he should not be able to access. These files can for example include database credentials, or other configuration files.

File Manipulation

File Manipulation enables an attacker to write custom data to files. This potentially leads to injection of arbitrary code on the server.

Object Injection

Object Injection enables an attacker to inject an object into PHP code, and can lead to arbitrary code execution, file exposure, or file manipulation attacks.

Code Injection

Code Injection enables an attacker to execute arbitrary code on the server.

Response Splitting

Response Splitting can be used to send arbitrary responses.

File Inclusion

File Inclusion enables an attacker to inject custom files into PHP's file loading mechanism, either explicitly passed to include, or for example via PHP's auto-loading mechanism.

Command Injection

Command Injection enables an attacker to inject a shell command that is execute with the privileges of the web-server. This can be used to expose sensitive data, or gain access of your server.

SQL Injection

SQL Injection enables an attacker to execute arbitrary SQL code on your database server gaining access to user data, or manipulating user data.

XPath Injection

XPath Injection enables an attacker to modify the parts of XML document that are read. If that XML document is for example used for authentication, this can lead to further vulnerabilities similar to SQL Injection.

LDAP Injection

LDAP Injection enables an attacker to inject LDAP statements potentially granting permission to run unauthorized queries, or modify content inside the LDAP tree.

Header Injection

Other Vulnerability

This category comprises other attack vectors such as manipulating the PHP runtime, loading custom extensions, freezing the runtime, or similar.

Regex Injection

Regex Injection enables an attacker to execute arbitrary code in your PHP process.

XML Injection

XML Injection enables an attacker to read files on your local filesystem including configuration files, or can be abused to freeze your web-server process.

Variable Injection

Variable Injection enables an attacker to overwrite program variables with custom data, and can lead to further vulnerabilities.

Unfortunately, the security analysis is currently not available for your project. If you are a non-commercial open-source project, please contact support to gain access.

php/class-widget-cache.php (1 issue)

Labels

Severity

Minor 1

Upgrade to new PHP Analysis Engine

These results are based on our legacy PHP analysis, consider migrating to our new PHP analysis engine instead. Learn more

<?php

namespace Rarst\Fragment_Cache;

/**
 * Cache widgets.
 */
class Widget_Cache extends Fragment_Cache {

	/**
	 * @inheritDoc
	 */
	public function enable() {

		if ( is_admin() ) {
			add_filter( 'widget_update_callback', array( $this, 'widget_update_callback' ) );
			add_action( 'wp_ajax_update-widget', array( $this, 'update_widget' ), 0 );
		} else {
			add_filter( 'widget_display_callback', array( $this, 'widget_display_callback' ), 10, 3 );
		}
	}

	/**
	 * @inheritDoc
	 */
	public function disable() {

		if ( is_admin() ) {
			remove_filter( 'widget_update_callback', array( $this, 'widget_update_callback' ) );
			remove_action( 'wp_ajax_update-widget', array( $this, 'update_widget' ), 0 );
		} else {
			remove_filter( 'widget_display_callback', array( $this, 'widget_display_callback' ), 10 );
		}
	}

	/**
	 * Adds timestamp to widget instance to use as salt.
	 *
	 * @param array $instance Widget instance to modify.
	 *
	 * @return array
	 */
	public function widget_update_callback( $instance ) {

		if ( is_array( $instance ) ) {
			$instance['fc_widget_edited'] = time();
		}

		return $instance;
	}

	/**
	 * Invalidate widget instance cache on Customizer save.
	 */
	public function update_widget() {
// Bad
class Router
{
    public function generate($path)
    {
        return $_SERVER['HOST'].$path;
    }
}

// Better
class Router
{
    private $host;

    public function __construct($host)
    {
        $this->host = $host;
    }

    public function generate($path)
    {
        return $this->host.$path;
    }
}

class Controller
{
    public function myAction(Request $request)
    {
        // Instead of
        $page = isset($_GET['page']) ? intval($_GET['page']) : 1;

        // Better (assuming you use the Symfony2 request)
        $page = $request->query->get('page', 1);
    }
}

		$customized = filter_input( INPUT_POST, 'customized' );

		if ( empty( $customized ) ) {
			return;
		}

		$customized = json_decode( $customized, true );
		$changed    = false;

		foreach ( $customized as $key => $data ) {

			if ( ! isset( $data['encoded_serialized_instance'] ) || 0 !== stripos( $key, 'widget' ) ) {
				continue;
			}

			$instance                     = unserialize( base64_decode( $data['encoded_serialized_instance'] ) );
			$instance['fc_widget_edited'] = time();
			$instance                     = base64_encode( serialize( $instance ) );

			$data['encoded_serialized_instance'] = $instance;
			$data['instance_hash_key']           = wp_hash( $instance );
			$customized[ $key ]                  = $data;

			$changed = true;
		}

		if ( $changed ) {
			$_POST['customized'] = wp_json_encode( $customized );
		}
	}

	/**
	 * Set up and echo widget cache
	 *
	 * @param array  $instance Widget instance data.
	 * @param object $widget   Widget object instance.
	 * @param array  $args     Arguments.
	 *
	 * @return bool false
	 */
	public function widget_display_callback( $instance, $widget, $args ) {

		$edited = isset( $instance['fc_widget_edited'] ) ? $instance['fc_widget_edited'] : '';

		echo $this->fetch(
			$widget->id,
			array(
				'callback' => array( $widget, 'widget' ),
				'args'     => array( $args, $instance ),
			),
			$edited
		);

		return false;
	}

	/**
	 * Generate widget output, capture with buffer and timestamp.
	 *
	 * @param string $name Fragment name.
	 * @param array  $args Arguments.
	 *
	 * @return string
	 */
	protected function callback( $name, $args ) {

		ob_start();
		call_user_func_array( $args['callback'], $args['args'] );

		return ob_get_clean() . $this->get_comment( $name );
	}
}


1		<?php
2
3		namespace Rarst\Fragment_Cache;
4
5		/**
6		* Cache widgets.
7		*/
8		class Widget_Cache extends Fragment_Cache {
9
10		/**
11		* @inheritDoc
12		*/
13	View Code Duplication	public function enable() {
14
15		if ( is_admin() ) {
16		add_filter( 'widget_update_callback', array( $this, 'widget_update_callback' ) );
17		add_action( 'wp_ajax_update-widget', array( $this, 'update_widget' ), 0 );
18		} else {
19		add_filter( 'widget_display_callback', array( $this, 'widget_display_callback' ), 10, 3 );
20		}
21		}
22
23		/**
24		* @inheritDoc
25		*/
26	View Code Duplication	public function disable() {
27
28		if ( is_admin() ) {
29		remove_filter( 'widget_update_callback', array( $this, 'widget_update_callback' ) );
30		remove_action( 'wp_ajax_update-widget', array( $this, 'update_widget' ), 0 );
31		} else {
32		remove_filter( 'widget_display_callback', array( $this, 'widget_display_callback' ), 10 );
33		}
34		}
35
36		/**
37		* Adds timestamp to widget instance to use as salt.
38		*
39		* @param array $instance Widget instance to modify.
40		*
41		* @return array
42		*/
43		public function widget_update_callback( $instance ) {
44
45		if ( is_array( $instance ) ) {
46		$instance['fc_widget_edited'] = time();
47		}
48
49		return $instance;
50		}
51
52		/**
53		* Invalidate widget instance cache on Customizer save.
54		*/
55		public function update_widget() {
		0 ignored issues – show Coding Style introduced 2017-10-11 13:10 UTC by Report Bug Copy Issue Report Show Similar Issues like this `update_widget` uses the super-global variable `$_POST` which is generally not recommended. Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: // Bad class Router { public function generate($path) { return $_SERVER['HOST'].$path; } } // Better class Router { private $host; public function __construct($host) { $this->host = $host; } public function generate($path) { return $this->host.$path; } } class Controller { public function myAction(Request $request) { // Instead of $page = isset($_GET['page']) ? intval($_GET['page']) : 1; // Better (assuming you use the Symfony2 request) $page = $request->query->get('page', 1); } } Loading history...
56
57		$customized = filter_input( INPUT_POST, 'customized' );
58
59		if ( empty( $customized ) ) {
60		return;
61		}
62
63		$customized = json_decode( $customized, true );
64		$changed = false;
65
66		foreach ( $customized as $key => $data ) {
67
68		if ( ! isset( $data['encoded_serialized_instance'] ) \|\| 0 !== stripos( $key, 'widget' ) ) {
69		continue;
70		}
71
72		$instance = unserialize( base64_decode( $data['encoded_serialized_instance'] ) );
73		$instance['fc_widget_edited'] = time();
74		$instance = base64_encode( serialize( $instance ) );
75
76		$data['encoded_serialized_instance'] = $instance;
77		$data['instance_hash_key'] = wp_hash( $instance );
78		$customized[ $key ] = $data;
79
80		$changed = true;
81		}
82
83		if ( $changed ) {
84		$_POST['customized'] = wp_json_encode( $customized );
85		}
86		}
87
88		/**
89		* Set up and echo widget cache
90		*
91		* @param array $instance Widget instance data.
92		* @param object $widget Widget object instance.
93		* @param array $args Arguments.
94		*
95		* @return bool false
96		*/
97		public function widget_display_callback( $instance, $widget, $args ) {
98
99		$edited = isset( $instance['fc_widget_edited'] ) ? $instance['fc_widget_edited'] : '';
100
101		echo $this->fetch(
102		$widget->id,
103		array(
104		'callback' => array( $widget, 'widget' ),
105		'args' => array( $args, $instance ),
106		),
107		$edited
108		);
109
110		return false;
111		}
112
113		/**
114		* Generate widget output, capture with buffer and timestamp.
115		*
116		* @param string $name Fragment name.
117		* @param array $args Arguments.
118		*
119		* @return string
120		*/
121		protected function callback( $name, $args ) {
122
123		ob_start();
124		call_user_func_array( $args['callback'], $args['args'] );
125
126		return ob_get_clean() . $this->get_comment( $name );
127		}
128		}
129

Rarst / fragment-cache

Issues (10)

Security Analysis no request data

php/class-widget-cache.php (1 issue)

Labels

Severity

Introduced By

Upgrade to new PHP Analysis Engine

Duplication Side-by-Side

Filter issues like