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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.

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maintenance/purgeParserCache.php (4 issues)

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<?php

/**
 * Remove old objects from the parser cache.
 * This only works when the parser cache is in an SQL database.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Maintenance
 */

require __DIR__ . '/Maintenance.php';

/**
 * Maintenance script to remove old objects from the parser cache.
 *
 * @ingroup Maintenance
 */
class PurgeParserCache extends Maintenance {
	public $lastProgress;

	function __construct() {
		parent::__construct();
		$this->addDescription( "Remove old objects from the parser cache. " .
			"This only works when the parser cache is in an SQL database." );
		$this->addOption( 'expiredate', 'Delete objects expiring before this date.', false, true );
		$this->addOption(
			'age',
			'Delete objects created more than this many seconds ago, assuming $wgParserCacheExpireTime ' .
				'has been consistent.',
			false, true );
	}

	function execute() {
		$inputDate = $this->getOption( 'expiredate' );
		$inputAge = $this->getOption( 'age' );
		if ( $inputDate !== null ) {
			$date = wfTimestamp( TS_MW, strtotime( $inputDate ) );
		} elseif ( $inputAge !== null ) {
			global $wgParserCacheExpireTime;
			$date = wfTimestamp( TS_MW, time() + $wgParserCacheExpireTime - intval( $inputAge ) );
		} else {
			$this->error( "Must specify either --expiredate or --age", 1 );
		}

		$english = Language::factory( 'en' );
		$this->output( "Deleting objects expiring before " . $english->timeanddate( $date ) . "\n" );
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

		$pc = wfGetParserCacheStorage();
		$success = $pc->deleteObjectsExpiringBefore( $date, [ $this, 'showProgress' ] );

		if ( !$success ) {
			$this->error( "\nCannot purge this kind of parser cache.", 1 );
		}
		$this->showProgress( 100 );
		$this->output( "\nDone\n" );
	}

	function showProgress( $percent ) {
		$percentString = sprintf( "%.2f", $percent );
		if ( $percentString === $this->lastProgress ) {
			return;
		}
		$this->lastProgress = $percentString;

		$stars = floor( $percent / 2 );
		$this->output( '[' . str_repeat( '*', $stars ) . str_repeat( '.', 50 - $stars ) . '] ' .
			"$percentString%\r" );
	}
}

$maintClass = 'PurgeParserCache';
require_once RUN_MAINTENANCE_IF_MAIN;


Issues (4122)

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maintenance/purgeParserCache.php (4 issues)

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1			<?php
			0 ignored issues – show Coding Style Compatibility introduced 2016-02-23 18:14 UTC by Report Bug Copy Issue Report Show Similar Issues like this For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 32 and the first side effect is on line 25. The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file. The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place. To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1. Loading history...
2			/**
3			* Remove old objects from the parser cache.
4			* This only works when the parser cache is in an SQL database.
5			*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License along
17			* with this program; if not, write to the Free Software Foundation, Inc.,
18			* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19			* http://www.gnu.org/copyleft/gpl.html
20			*
21			* @file
22			* @ingroup Maintenance
23			*/
24
25			require __DIR__ . '/Maintenance.php';
26
27			/**
28			* Maintenance script to remove old objects from the parser cache.
29			*
30			* @ingroup Maintenance
31			*/
32			class PurgeParserCache extends Maintenance {
33			public $lastProgress;
34
35			function __construct() {
36			parent::__construct();
37			$this->addDescription( "Remove old objects from the parser cache. " .
38			"This only works when the parser cache is in an SQL database." );
39			$this->addOption( 'expiredate', 'Delete objects expiring before this date.', false, true );
40			$this->addOption(
41			'age',
42			'Delete objects created more than this many seconds ago, assuming $wgParserCacheExpireTime ' .
43			'has been consistent.',
44			false, true );
45			}
46
47			function execute() {
48			$inputDate = $this->getOption( 'expiredate' );
49			$inputAge = $this->getOption( 'age' );
50			if ( $inputDate !== null ) {
51			$date = wfTimestamp( TS_MW, strtotime( $inputDate ) );
52			} elseif ( $inputAge !== null ) {
53			global $wgParserCacheExpireTime;
54			$date = wfTimestamp( TS_MW, time() + $wgParserCacheExpireTime - intval( $inputAge ) );
55			} else {
56			$this->error( "Must specify either --expiredate or --age", 1 );
57			}
58
59			$english = Language::factory( 'en' );
60			$this->output( "Deleting objects expiring before " . $english->timeanddate( $date ) . "\n" );
			0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this The variable `$date` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history... Security Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like `$date` can also be of type `false`; however, `Language::timeanddate()` does only seem to accept `string`, did you maybe forget to handle an error condition? Loading history...
61
62			$pc = wfGetParserCacheStorage();
63			$success = $pc->deleteObjectsExpiringBefore( $date, [ $this, 'showProgress' ] );
			0 ignored issues – show Security Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like `$date` can also be of type `false`; however, `BagOStuff::deleteObjectsExpiringBefore()` does only seem to accept `string`, did you maybe forget to handle an error condition? Loading history...
64			if ( !$success ) {
65			$this->error( "\nCannot purge this kind of parser cache.", 1 );
66			}
67			$this->showProgress( 100 );
68			$this->output( "\nDone\n" );
69			}
70
71			function showProgress( $percent ) {
72			$percentString = sprintf( "%.2f", $percent );
73			if ( $percentString === $this->lastProgress ) {
74			return;
75			}
76			$this->lastProgress = $percentString;
77
78			$stars = floor( $percent / 2 );
79			$this->output( '[' . str_repeat( '*', $stars ) . str_repeat( '.', 50 - $stars ) . '] ' .
80			"$percentString%\r" );
81			}
82			}
83
84			$maintClass = 'PurgeParserCache';
85			require_once RUN_MAINTENANCE_IF_MAIN;
86

wikimedia / mediawiki

Issues (4122)

Security Analysis not enabled

maintenance/purgeParserCache.php (4 issues)

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