Issues (4122)

Security Analysis    not enabled

This project does not seem to handle request data directly as such no vulnerable execution paths were found.

  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.

includes/api/ApiQueryBlocks.php (3 issues)

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1
<?php
2
/**
3
 *
4
 *
5
 * Created on Sep 10, 2007
6
 *
7
 * Copyright © 2007 Roan Kattouw "<Firstname>.<Lastname>@gmail.com"
8
 *
9
 * This program is free software; you can redistribute it and/or modify
10
 * it under the terms of the GNU General Public License as published by
11
 * the Free Software Foundation; either version 2 of the License, or
12
 * (at your option) any later version.
13
 *
14
 * This program is distributed in the hope that it will be useful,
15
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17
 * GNU General Public License for more details.
18
 *
19
 * You should have received a copy of the GNU General Public License along
20
 * with this program; if not, write to the Free Software Foundation, Inc.,
21
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22
 * http://www.gnu.org/copyleft/gpl.html
23
 *
24
 * @file
25
 */
26
27
/**
28
 * Query module to enumerate all user blocks
29
 *
30
 * @ingroup API
31
 */
32
class ApiQueryBlocks extends ApiQueryBase {
33
34
	public function __construct( ApiQuery $query, $moduleName ) {
35
		parent::__construct( $query, $moduleName, 'bk' );
36
	}
37
38
	public function execute() {
39
		global $wgContLang;
40
41
		$db = $this->getDB();
42
		$params = $this->extractRequestParams();
43
		$this->requireMaxOneParameter( $params, 'users', 'ip' );
44
45
		$prop = array_flip( $params['prop'] );
46
		$fld_id = isset( $prop['id'] );
47
		$fld_user = isset( $prop['user'] );
48
		$fld_userid = isset( $prop['userid'] );
49
		$fld_by = isset( $prop['by'] );
50
		$fld_byid = isset( $prop['byid'] );
51
		$fld_timestamp = isset( $prop['timestamp'] );
52
		$fld_expiry = isset( $prop['expiry'] );
53
		$fld_reason = isset( $prop['reason'] );
54
		$fld_range = isset( $prop['range'] );
55
		$fld_flags = isset( $prop['flags'] );
56
57
		$result = $this->getResult();
58
59
		$this->addTables( 'ipblocks' );
60
		$this->addFields( [ 'ipb_auto', 'ipb_id', 'ipb_timestamp' ] );
61
62
		$this->addFieldsIf( [ 'ipb_address', 'ipb_user' ], $fld_user || $fld_userid );
63
		$this->addFieldsIf( 'ipb_by_text', $fld_by );
64
		$this->addFieldsIf( 'ipb_by', $fld_byid );
65
		$this->addFieldsIf( 'ipb_expiry', $fld_expiry );
66
		$this->addFieldsIf( 'ipb_reason', $fld_reason );
67
		$this->addFieldsIf( [ 'ipb_range_start', 'ipb_range_end' ], $fld_range );
68
		$this->addFieldsIf( [ 'ipb_anon_only', 'ipb_create_account', 'ipb_enable_autoblock',
69
			'ipb_block_email', 'ipb_deleted', 'ipb_allow_usertalk' ],
70
			$fld_flags );
71
72
		$this->addOption( 'LIMIT', $params['limit'] + 1 );
73
		$this->addTimestampWhereRange(
74
			'ipb_timestamp',
75
			$params['dir'],
76
			$params['start'],
77
			$params['end']
78
		);
79
		// Include in ORDER BY for uniqueness
80
		$this->addWhereRange( 'ipb_id', $params['dir'], null, null );
81
82
		if ( !is_null( $params['continue'] ) ) {
83
			$cont = explode( '|', $params['continue'] );
84
			$this->dieContinueUsageIf( count( $cont ) != 2 );
85
			$op = ( $params['dir'] == 'newer' ? '>' : '<' );
86
			$continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
87
			$continueId = (int)$cont[1];
88
			$this->dieContinueUsageIf( $continueId != $cont[1] );
89
			$this->addWhere( "ipb_timestamp $op $continueTimestamp OR " .
90
				"(ipb_timestamp = $continueTimestamp AND " .
91
				"ipb_id $op= $continueId)"
92
			);
93
		}
94
95
		if ( isset( $params['ids'] ) ) {
96
			$this->addWhereFld( 'ipb_id', $params['ids'] );
97
		}
98
		if ( isset( $params['users'] ) ) {
99
			$usernames = [];
100
			foreach ( (array)$params['users'] as $u ) {
101
				$usernames[] = $this->prepareUsername( $u );
102
			}
103
			$this->addWhereFld( 'ipb_address', $usernames );
104
			$this->addWhereFld( 'ipb_auto', 0 );
105
		}
106
		if ( isset( $params['ip'] ) ) {
107
			$blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' );
108
			if ( IP::isIPv4( $params['ip'] ) ) {
109
				$type = 'IPv4';
110
				$cidrLimit = $blockCIDRLimit['IPv4'];
111
				$prefixLen = 0;
112
			} elseif ( IP::isIPv6( $params['ip'] ) ) {
113
				$type = 'IPv6';
114
				$cidrLimit = $blockCIDRLimit['IPv6'];
115
				$prefixLen = 3; // IP::toHex output is prefixed with "v6-"
116
			} else {
117
				$this->dieUsage( 'IP parameter is not valid', 'param_ip' );
118
			}
119
120
			# Check range validity, if it's a CIDR
121
			list( $ip, $range ) = IP::parseCIDR( $params['ip'] );
122
			if ( $ip !== false && $range !== false && $range < $cidrLimit ) {
123
				$this->dieUsage(
124
					"$type CIDR ranges broader than /$cidrLimit are not accepted",
0 ignored issues
show
The variable $type 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

  1. 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;
        }
    }
    
  2. 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;
    }
    
  3. 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...
The variable $cidrLimit 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

  1. 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;
        }
    }
    
  2. 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;
    }
    
  3. 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...
125
					'cidrtoobroad'
126
				);
127
			}
128
129
			# Let IP::parseRange handle calculating $upper, instead of duplicating the logic here.
130
			list( $lower, $upper ) = IP::parseRange( $params['ip'] );
131
132
			# Extract the common prefix to any rangeblock affecting this IP/CIDR
133
			$prefix = substr( $lower, 0, $prefixLen + floor( $cidrLimit / 4 ) );
0 ignored issues
show
The variable $prefixLen 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

  1. 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;
        }
    }
    
  2. 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;
    }
    
  3. 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...
134
135
			# Fairly hard to make a malicious SQL statement out of hex characters,
136
			# but it is good practice to add quotes
137
			$lower = $db->addQuotes( $lower );
138
			$upper = $db->addQuotes( $upper );
139
140
			$this->addWhere( [
141
				'ipb_range_start' . $db->buildLike( $prefix, $db->anyString() ),
142
				'ipb_range_start <= ' . $lower,
143
				'ipb_range_end >= ' . $upper,
144
				'ipb_auto' => 0
145
			] );
146
		}
147
148
		if ( !is_null( $params['show'] ) ) {
149
			$show = array_flip( $params['show'] );
150
151
			/* Check for conflicting parameters. */
152 View Code Duplication
			if ( ( isset( $show['account'] ) && isset( $show['!account'] ) )
153
				|| ( isset( $show['ip'] ) && isset( $show['!ip'] ) )
154
				|| ( isset( $show['range'] ) && isset( $show['!range'] ) )
155
				|| ( isset( $show['temp'] ) && isset( $show['!temp'] ) )
156
			) {
157
				$this->dieUsageMsg( 'show' );
158
			}
159
160
			$this->addWhereIf( 'ipb_user = 0', isset( $show['!account'] ) );
161
			$this->addWhereIf( 'ipb_user != 0', isset( $show['account'] ) );
162
			$this->addWhereIf( 'ipb_user != 0 OR ipb_range_end > ipb_range_start', isset( $show['!ip'] ) );
163
			$this->addWhereIf( 'ipb_user = 0 AND ipb_range_end = ipb_range_start', isset( $show['ip'] ) );
164
			$this->addWhereIf( 'ipb_expiry = ' .
165
				$db->addQuotes( $db->getInfinity() ), isset( $show['!temp'] ) );
166
			$this->addWhereIf( 'ipb_expiry != ' .
167
				$db->addQuotes( $db->getInfinity() ), isset( $show['temp'] ) );
168
			$this->addWhereIf( 'ipb_range_end = ipb_range_start', isset( $show['!range'] ) );
169
			$this->addWhereIf( 'ipb_range_end > ipb_range_start', isset( $show['range'] ) );
170
		}
171
172
		if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
173
			$this->addWhereFld( 'ipb_deleted', 0 );
174
		}
175
176
		# Filter out expired rows
177
		$this->addWhere( 'ipb_expiry > ' . $db->addQuotes( $db->timestamp() ) );
178
179
		$res = $this->select( __METHOD__ );
180
181
		$count = 0;
182
		foreach ( $res as $row ) {
183
			if ( ++$count > $params['limit'] ) {
184
				// We've had enough
185
				$this->setContinueEnumParameter( 'continue', "$row->ipb_timestamp|$row->ipb_id" );
186
				break;
187
			}
188
			$block = [
189
				ApiResult::META_TYPE => 'assoc',
190
			];
191
			if ( $fld_id ) {
192
				$block['id'] = (int)$row->ipb_id;
193
			}
194
			if ( $fld_user && !$row->ipb_auto ) {
195
				$block['user'] = $row->ipb_address;
196
			}
197
			if ( $fld_userid && !$row->ipb_auto ) {
198
				$block['userid'] = (int)$row->ipb_user;
199
			}
200
			if ( $fld_by ) {
201
				$block['by'] = $row->ipb_by_text;
202
			}
203
			if ( $fld_byid ) {
204
				$block['byid'] = (int)$row->ipb_by;
205
			}
206
			if ( $fld_timestamp ) {
207
				$block['timestamp'] = wfTimestamp( TS_ISO_8601, $row->ipb_timestamp );
208
			}
209
			if ( $fld_expiry ) {
210
				$block['expiry'] = $wgContLang->formatExpiry( $row->ipb_expiry, TS_ISO_8601 );
211
			}
212
			if ( $fld_reason ) {
213
				$block['reason'] = $row->ipb_reason;
214
			}
215
			if ( $fld_range && !$row->ipb_auto ) {
216
				$block['rangestart'] = IP::formatHex( $row->ipb_range_start );
217
				$block['rangeend'] = IP::formatHex( $row->ipb_range_end );
218
			}
219
			if ( $fld_flags ) {
220
				// For clarity, these flags use the same names as their action=block counterparts
221
				$block['automatic'] = (bool)$row->ipb_auto;
222
				$block['anononly'] = (bool)$row->ipb_anon_only;
223
				$block['nocreate'] = (bool)$row->ipb_create_account;
224
				$block['autoblock'] = (bool)$row->ipb_enable_autoblock;
225
				$block['noemail'] = (bool)$row->ipb_block_email;
226
				$block['hidden'] = (bool)$row->ipb_deleted;
227
				$block['allowusertalk'] = (bool)$row->ipb_allow_usertalk;
228
			}
229
			$fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $block );
230
			if ( !$fit ) {
231
				$this->setContinueEnumParameter( 'continue', "$row->ipb_timestamp|$row->ipb_id" );
232
				break;
233
			}
234
		}
235
		$result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'block' );
236
	}
237
238
	protected function prepareUsername( $user ) {
239
		if ( !$user ) {
240
			$this->dieUsage( 'User parameter may not be empty', 'param_user' );
241
		}
242
		$name = User::isIP( $user )
243
			? $user
244
			: User::getCanonicalName( $user, 'valid' );
245
		if ( $name === false ) {
246
			$this->dieUsage( "User name {$user} is not valid", 'param_user' );
247
		}
248
		return $name;
249
	}
250
251
	public function getAllowedParams() {
252
		$blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' );
253
254
		return [
255
			'start' => [
256
				ApiBase::PARAM_TYPE => 'timestamp'
257
			],
258
			'end' => [
259
				ApiBase::PARAM_TYPE => 'timestamp',
260
			],
261
			'dir' => [
262
				ApiBase::PARAM_TYPE => [
263
					'newer',
264
					'older'
265
				],
266
				ApiBase::PARAM_DFLT => 'older',
267
				ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
268
			],
269
			'ids' => [
270
				ApiBase::PARAM_TYPE => 'integer',
271
				ApiBase::PARAM_ISMULTI => true
272
			],
273
			'users' => [
274
				ApiBase::PARAM_TYPE => 'user',
275
				ApiBase::PARAM_ISMULTI => true
276
			],
277
			'ip' => [
278
				ApiBase::PARAM_HELP_MSG => [
279
					'apihelp-query+blocks-param-ip',
280
					$blockCIDRLimit['IPv4'],
281
					$blockCIDRLimit['IPv6'],
282
				],
283
			],
284
			'limit' => [
285
				ApiBase::PARAM_DFLT => 10,
286
				ApiBase::PARAM_TYPE => 'limit',
287
				ApiBase::PARAM_MIN => 1,
288
				ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
289
				ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
290
			],
291
			'prop' => [
292
				ApiBase::PARAM_DFLT => 'id|user|by|timestamp|expiry|reason|flags',
293
				ApiBase::PARAM_TYPE => [
294
					'id',
295
					'user',
296
					'userid',
297
					'by',
298
					'byid',
299
					'timestamp',
300
					'expiry',
301
					'reason',
302
					'range',
303
					'flags'
304
				],
305
				ApiBase::PARAM_ISMULTI => true,
306
				ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
307
			],
308
			'show' => [
309
				ApiBase::PARAM_TYPE => [
310
					'account',
311
					'!account',
312
					'temp',
313
					'!temp',
314
					'ip',
315
					'!ip',
316
					'range',
317
					'!range',
318
				],
319
				ApiBase::PARAM_ISMULTI => true
320
			],
321
			'continue' => [
322
				ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
323
			],
324
		];
325
	}
326
327
	protected function getExamplesMessages() {
328
		return [
329
			'action=query&list=blocks'
330
				=> 'apihelp-query+blocks-example-simple',
331
			'action=query&list=blocks&bkusers=Alice|Bob'
332
				=> 'apihelp-query+blocks-example-users',
333
		];
334
	}
335
336
	public function getHelpUrls() {
337
		return 'https://www.mediawiki.org/wiki/API:Blocks';
338
	}
339
}
340