Issues in Downloader.php (master) - Issues in master - EvilFreelancer/easyrsa-php - Measure and Improve Code Quality continuously with Scrutinizer

Issues (10)

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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/Downloader.php (3 issues)

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<?php

declare(strict_types=1);

namespace EasyRSA;

use EasyRSA\Interfaces\DownloaderInterface;
use splitbrain\PHPArchive\Tar;

class Downloader extends Worker implements DownloaderInterface
{
    /**
     * Url via which possible to get the latest release of EasyRSA.
     */
    public const URL_LATEST_RELEASE = 'https://api.github.com/repos/OpenVPN/easy-rsa/releases/latest';

    /**
     * Exec some operation by cURL.
     *
     * @param string      $url
     * @param string|null $filename
     *
     * @return string|null
     */
    private function curlExec(string $url, string $filename = null): ?string
    {
        $curl = curl_init();

        curl_setopt($curl, CURLOPT_USERAGENT, 'useragent');
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);

        // If filename is not set
        if (null !== $filename) {
            $fp = fopen($filename, 'wb+');
            curl_setopt($curl, CURLOPT_FILE, $fp);
        }

        $result = curl_exec($curl);
        curl_close($curl);

        return is_bool($result) ? null : $result;
    }

    /**
     * {@inheritdoc}
     */
    public function getLatestVersion(): string
    {
        $json = $this->curlExec(self::URL_LATEST_RELEASE);
        $json = json_decode($json, true, 512, JSON_THROW_ON_ERROR);

        return $json['tarball_url'];
    }

    /**
     * {@inheritdoc}
     */
    public function downloadLatestVersion(): ?string
    {
        // Get full path to archive file
        $filename = $this->config->getArchive();

        // Get url with latest release
        $latest = $this->getLatestVersion();

        // Download and return status
        return $this->curlExec($latest, $filename);
class Author {
    private $name;

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

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * {@inheritdoc}
     *
     * @throws \splitbrain\PHPArchive\ArchiveIllegalCompressionException If archive is broken
     * @throws \splitbrain\PHPArchive\ArchiveIOException If not possible to read archive
     * @throws \splitbrain\PHPArchive\ArchiveCorruptedException If archive corrupted
     */
    public function extractArchive(): array
    {
        $tar = new Tar();
        $tar->open($this->config->get('archive'));

        $tar->extract($this->config->get('scripts'), 1);


        return $tar->contents();
    }

    /**
     * {@inheritdoc}
     *
     * @throws \splitbrain\PHPArchive\ArchiveIllegalCompressionException If archive is broken
     * @throws \splitbrain\PHPArchive\ArchiveIOException If not possible to read archive
     * @throws \splitbrain\PHPArchive\ArchiveCorruptedException If archive corrupted
     */
    public function getEasyRSA(): void
    {
        $this->downloadLatestVersion();
        $this->extractArchive();
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace EasyRSA;
6
7			use EasyRSA\Interfaces\DownloaderInterface;
8			use splitbrain\PHPArchive\Tar;
9
10			class Downloader extends Worker implements DownloaderInterface
11			{
12			/**
13			* Url via which possible to get the latest release of EasyRSA.
14			*/
15			public const URL_LATEST_RELEASE = 'https://api.github.com/repos/OpenVPN/easy-rsa/releases/latest';
16
17			/**
18			* Exec some operation by cURL.
19			*
20			* @param string $url
21			* @param string\|null $filename
22			*
23			* @return string\|null
24			*/
25			private function curlExec(string $url, string $filename = null): ?string
26			{
27			$curl = curl_init();
28
29			curl_setopt($curl, CURLOPT_USERAGENT, 'useragent');
30			curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
31			curl_setopt($curl, CURLOPT_URL, $url);
32			curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
33
34			// If filename is not set
35			if (null !== $filename) {
36			$fp = fopen($filename, 'wb+');
37			curl_setopt($curl, CURLOPT_FILE, $fp);
38			}
39
40			$result = curl_exec($curl);
41			curl_close($curl);
42
43			return is_bool($result) ? null : $result;
44			}
45
46			/**
47			* {@inheritdoc}
48			*/
49			public function getLatestVersion(): string
50			{
51			$json = $this->curlExec(self::URL_LATEST_RELEASE);
52			$json = json_decode($json, true, 512, JSON_THROW_ON_ERROR);
53
54			return $json['tarball_url'];
55			}
56
57			/**
58			* {@inheritdoc}
59			*/
60			public function downloadLatestVersion(): ?string
61			{
62			// Get full path to archive file
63			$filename = $this->config->getArchive();
64
65			// Get url with latest release
66			$latest = $this->getLatestVersion();
67
68			// Download and return status
69			return $this->curlExec($latest, $filename);
			0 ignored issues – show Bug Best Practice introduced 2020-07-10 21:12 UTC by Report Bug Copy Issue Report Show Similar Issues like this The return type of `return $this->curlExec($latest, $filename);` (`object\|integer\|double\|string\|null\|array`) is incompatible with the return type declared by the interface `EasyRSA\Interfaces\Downl...::downloadLatestVersion` of type `string\|null`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
70			}
71
72			/**
73			* {@inheritdoc}
74			*
75			* @throws \splitbrain\PHPArchive\ArchiveIllegalCompressionException If archive is broken
76			* @throws \splitbrain\PHPArchive\ArchiveIOException If not possible to read archive
77			* @throws \splitbrain\PHPArchive\ArchiveCorruptedException If archive corrupted
78			*/
79			public function extractArchive(): array
80			{
81			$tar = new Tar();
82			$tar->open($this->config->get('archive'));
			0 ignored issues – show Bug introduced 2020-07-10 21:12 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like `$this->config->get('archive')` targeting `EasyRSA\Interfaces\ConfigInterface::get()` can also be of type `boolean` or `null`; however, `splitbrain\PHPArchive\Tar::open()` does only seem to accept `string`, maybe add an additional type check? This check looks at variables that are passed out again to other methods. If the outgoing method call has stricter type requirements than the method itself, an issue is raised. An additional type check may prevent trouble. Loading history...
83			$tar->extract($this->config->get('scripts'), 1);
			0 ignored issues – show Bug introduced 2020-07-10 21:12 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like `$this->config->get('scripts')` targeting `EasyRSA\Interfaces\ConfigInterface::get()` can also be of type `boolean` or `null`; however, `splitbrain\PHPArchive\Tar::extract()` does only seem to accept `string`, maybe add an additional type check? This check looks at variables that are passed out again to other methods. If the outgoing method call has stricter type requirements than the method itself, an issue is raised. An additional type check may prevent trouble. Loading history...
84
85			return $tar->contents();
86			}
87
88			/**
89			* {@inheritdoc}
90			*
91			* @throws \splitbrain\PHPArchive\ArchiveIllegalCompressionException If archive is broken
92			* @throws \splitbrain\PHPArchive\ArchiveIOException If not possible to read archive
93			* @throws \splitbrain\PHPArchive\ArchiveCorruptedException If archive corrupted
94			*/
95			public function getEasyRSA(): void
96			{
97			$this->downloadLatestVersion();
98			$this->extractArchive();
99			}
100			}
101

EvilFreelancer / easyrsa-php

Issues (10)

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src/Downloader.php (3 issues)

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