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<?php |
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/** |
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* Core functions |
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* |
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* @package WPVulnerability |
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* |
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* @version 2.0.0 |
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*/ |
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|
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defined( 'ABSPATH' ) || die( 'No script kiddies please!' ); |
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|
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/** |
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* Adds a vulnerability notice under vulnerable core. |
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* |
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* @since 2.0.0 |
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* |
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* @return void |
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*/ |
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function wpvulnerability_core_info_after() { |
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|
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// Retrieve the vulnerabilities for core from the options table and decode the JSON. |
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if ( is_multisite() ) { |
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$core_vulnerabilities = json_decode( get_site_option( 'wpvulnerability-core' ), true ); |
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} else { |
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$core_vulnerabilities = json_decode( get_option( 'wpvulnerability-core' ), true ); |
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} |
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|
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// Generate the vulnerability notice message. |
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$message = sprintf( |
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/* translators: 1: core version */ |
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__( 'WordPress %1$s has a known vulnerability that may be affecting this version.', 'wpvulnerability' ), |
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get_bloginfo( 'version' ) |
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); |
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|
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$information = '<p class="text-red"><img src="' . esc_url( WPVULNERABILITY_PLUGIN_URL ) . 'assets/icon.svg" style="height: 16px; vertical-align: text-top; width: 16px;" alt="" title="WPVulnerability"> <strong>' . $message . '</strong></p>'; |
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$information .= '<table class="wp-list-table widefat wpvulnerability">'; |
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|
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// Loop through all vulnerabilities for the current version and add their details to the table row HTML markup. |
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if ( is_array( $core_vulnerabilities ) ) { |
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foreach ( $core_vulnerabilities as $vulnerability ) { |
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|
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$what = array(); |
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if ( isset( $vulnerability['impact']['cwe'] ) ) { |
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foreach ( $vulnerability['impact']['cwe'] as $vulnerability_cwe ) { |
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$what[] = '<div><b>' . wp_kses( (string) $vulnerability_cwe['name'], 'strip' ) . '</b></div><div><i>' . wp_kses_post( (string) $vulnerability_cwe['description'] ) . '</i></div>'; |
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} |
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} |
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|
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$sources = array(); |
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if ( isset( $vulnerability['source'] ) ) { |
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foreach ( $vulnerability['source'] as $vulnerability_source ) { |
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$sources[] = '<a href="' . esc_url( (string) $vulnerability_source['link'] ) . '" target="_blank" rel="external nofollow noopener noreferrer">[+]</a> ' . wp_kses( (string) $vulnerability_source['name'], 'strip' ); |
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} |
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} |
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$source = count( $sources ) ? '<div style="padding-bottom: 5px;">' . implode( '<br>', $sources ) . '</div>' : ''; |
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|
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$score = isset( $vulnerability['impact']['cvss']['score'] ) ? number_format( (float) $vulnerability['impact']['cvss']['score'], 1, '.', '' ) : null; |
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$severity = isset( $vulnerability['impact']['cvss']['severity'] ) ? wpvulnerability_severity( $vulnerability['impact']['cvss']['severity'] ) : null; |
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|
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$information .= '<tr>'; |
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$information .= '<td style="max-width: 256px; min-width: 96px;">WordPress <b>' . wp_kses( (string) $vulnerability['name'], 'strip' ) . '</b></td>'; |
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$information .= '<td>'; |
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if ( count( $what ) ) { |
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$information .= '<div style="padding-bottom: 5px;">' . implode( '', $what ) . '</div>'; |
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} |
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if ( ! is_null( $score ) || ! is_null( $severity ) ) { |
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$information .= '<div style="padding-bottom: 5px;">'; |
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if ( ! is_null( $score ) ) { |
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$information .= '<div>' . __( 'Global score: ', 'wpvulnerability' ) . $score . ' / 10</div>'; |
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} |
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if ( ! is_null( $severity ) ) { |
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$information .= '<div>' . __( 'Severity: ', 'wpvulnerability' ) . $severity . '</div>'; |
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} |
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$information .= '</div>'; |
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} |
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$information .= wp_kses( (string) $source, 'post' ); |
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$information .= '</td>'; |
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$information .= '</tr>'; |
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} |
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} |
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|
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$information .= '</table>'; |
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|
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echo $information; // phpcs:ignore |
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} |
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|
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/** |
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* Retrieves vulnerabilities for a given WordPress core version and updates its data. |
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* |
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* @since 2.0.0 |
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* |
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* @return array|false The updated core data array or false if no vulnerabilities are found. |
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*/ |
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function wpvulnerability_get_fresh_core_vulnerabilities() { |
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|
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// Get the core version and sanitize it. |
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$version = wpvulnerability_sanitize_version( get_bloginfo( 'version' ) ); |
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|
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// Retrieve vulnerabilities for the core version. |
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$response = wpvulnerability_get_core( $version, 0 ); |
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|
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$core_data = array(); |
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|
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// If no vulnerabilities are found, return false. |
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if ( empty( $response ) ) { |
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return false; |
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} |
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|
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// If vulnerabilities are found, update the core data. |
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foreach ( $response as $v ) { |
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if ( isset( $v['name'], $v['source'], $v['impact'] ) ) { // Ensure expected keys exist. |
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$core_data[] = array( |
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'name' => wp_kses( (string) $v['name'], 'strip' ), |
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'source' => $v['source'], |
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'impact' => $v['impact'], |
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); |
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} |
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} |
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|
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return ! empty( $core_data ) ? $core_data : false; // Return false if core_data is empty. |
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} |
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|
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/** |
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* Get Vulnerabilities |
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* |
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* Retrieves and caches the vulnerabilities for the installed WordPress core version. |
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* |
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* @since 2.0.0 |
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* |
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* @return string JSON-encoded array of core data with vulnerabilities and vulnerable status. |
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*/ |
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function wpvulnerability_core_get_installed() { |
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|
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$wpvulnerability_core_vulnerable = 0; |
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$current_version = wpvulnerability_sanitize_version( get_bloginfo( 'version' ) ); |
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|
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// Get fresh core vulnerabilities. |
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$core = wpvulnerability_get_fresh_core_vulnerabilities(); |
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|
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// Check if vulnerabilities were found and count them. |
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if ( is_array( $core ) && count( $core ) > 0 ) { |
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$wpvulnerability_core_vulnerable = count( $core ); |
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} |
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|
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// Cache the vulnerability data and the timestamp for cache expiration. |
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if ( is_multisite() ) { |
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update_site_option( 'wpvulnerability-core', wp_json_encode( $core ) ); |
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update_site_option( 'wpvulnerability-core-vulnerable', wp_json_encode( number_format( $wpvulnerability_core_vulnerable, 0, '.', '' ) ) ); |
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update_site_option( 'wpvulnerability-core-cache', wp_json_encode( number_format( time() + ( 3600 * wpvulnerability_cache_hours() ), 0, '.', '' ) ) ); |
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update_site_option( 'wpvulnerability-core-version', wp_json_encode( $current_version ) ); |
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} else { |
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update_option( 'wpvulnerability-core', wp_json_encode( $core ) ); |
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update_option( 'wpvulnerability-core-vulnerable', wp_json_encode( number_format( $wpvulnerability_core_vulnerable, 0, '.', '' ) ) ); |
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update_option( 'wpvulnerability-core-cache', wp_json_encode( number_format( time() + ( 3600 * wpvulnerability_cache_hours() ), 0, '.', '' ) ) ); |
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update_option( 'wpvulnerability-core-version', wp_json_encode( $current_version ) ); |
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} |
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|
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// Return the JSON-encoded array of core vulnerabilities. |
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return wp_json_encode( $core ); |
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} |
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|
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/** |
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* Get cached core vulnerabilities without refreshing external data. |
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* |
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* @since 2.0.0 |
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* @since 4.1.2 Refreshes when the stored WordPress core version differs from the running version. |
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* |
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* @return array Array of core with their vulnerabilities. |
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*/ |
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function wpvulnerability_core_get_vulnerabilities() { |
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|
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if ( is_multisite() ) { |
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$core_data = json_decode( get_site_option( 'wpvulnerability-core' ), true ); |
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} else { |
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$core_data = json_decode( get_option( 'wpvulnerability-core' ), true ); |
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} |
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|
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return is_array( $core_data ) ? $core_data : array(); |
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} |
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|
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/** |
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* Update the core cache and remove any old cache data. |
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* |
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* @since 2.0.0 |
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* |
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* @return void |
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*/ |
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function wpvulnerability_core_get_vulnerabilities_clean() { |
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wpvulnerability_clear_cache( 'core' ); |
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wpvulnerability_core_get_installed(); |
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} |
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|
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/** |
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* Adds vulnerability information after the core version and notices on the update-core.php page. |
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* |
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* @since 2.0.0 |
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* |
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* @return void |
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*/ |
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function wpvulnerability_core_page() { |
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|
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// Check if the current page is the update-core.php page. |
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global $pagenow; |
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if ( wpvulnerability_analyze_filter( 'core' ) && 'update-core.php' === $pagenow && wpvulnerability_capabilities() ) { |
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|
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// Get the vulnerabilities for the core. |
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$core = wpvulnerability_core_get_vulnerabilities(); |
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|
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// If there are vulnerabilities, add an action to display them after the core auto updates settings. |
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if ( is_array( $core ) && ! empty( $core ) ) { |
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add_action( 'after_core_auto_updates_settings', 'wpvulnerability_core_info_after' ); |
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} |
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} |
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} |
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// Add notices for vulnerable core on the core page. |
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add_action( 'admin_head', 'wpvulnerability_core_page' ); |
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|
