GHSA-44wr-rmwq-3phw
Suggest an improvement- Source
- https://github.com/advisories/GHSA-44wr-rmwq-3phw
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/08/GHSA-44wr-rmwq-3phw/GHSA-44wr-rmwq-3phw.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-44wr-rmwq-3phw
- Aliases
- Published
- 2023-08-21T19:58:04Z
- Modified
- 2024-02-16T08:04:52.899036Z
- Severity
-
- 7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Craft CMS vulnerable to Remote Code Execution via validatePath bypass
- Details
-
Summary
Bypassing the validatePath function can lead to potential Remote Code Execution (Post-authentication, ALLOWADMINCHANGES=true)
Details
In bootstrap.php, the SystemPaths path is set as below.
// Set the vendor path. By default assume that it's 4 levels up from here $vendorPath = $findConfigPath('--vendorPath', 'CRAFT_VENDOR_PATH') ?? dirname(__DIR__, 3); // Set the "project root" path that contains config/, storage/, etc. By default assume that it's up a level from vendor/. $rootPath = $findConfigPath('--basePath', 'CRAFT_BASE_PATH') ?? dirname($vendorPath); // By default the remaining directories will be in the base directory $dotenvPath = $findConfigPath('--dotenvPath', 'CRAFT_DOTENV_PATH') ?? "$rootPath/.env"; $configPath = $findConfigPath('--configPath', 'CRAFT_CONFIG_PATH') ?? "$rootPath/config"; $contentMigrationsPath = $findConfigPath('--contentMigrationsPath', 'CRAFT_CONTENT_MIGRATIONS_PATH') ?? "$rootPath/migrations"; $storagePath = $findConfigPath('--storagePath', 'CRAFT_STORAGE_PATH') ?? "$rootPath/storage"; $templatesPath = $findConfigPath('--templatesPath', 'CRAFT_TEMPLATES_PATH') ?? "$rootPath/templates"; $translationsPath = $findConfigPath('--translationsPath', 'CRAFT_TRANSLATIONS_PATH') ?? "$rootPath/translations"; $testsPath = $findConfigPath('--testsPath', 'CRAFT_TESTS_PATH') ?? "$rootPath/tests";Because paths are validated based on the /path1/path2 format, this can be bypassed using a file URI scheme such as file:///path1/path2. File scheme is supported in mkdir()
/** * @param string $attribute * @param array|null $params * @param InlineValidator $validator * @return void * @since 4.4.6 */ public function validatePath(string $attribute, ?array $params, InlineValidator $validator): void { // Make sure it’s not within any of the system directories $path = FileHelper::absolutePath($this->getRootPath(), '/'); $systemDirs = Craft::$app->getPath()->getSystemPaths(); foreach ($systemDirs as $dir) { $dir = FileHelper::absolutePath($dir, '/'); if (str_starts_with("$path/", "$dir/")) { $validator->addError($this, $attribute, Craft::t('app', 'Local volumes cannot be located within system directories.')); break; } } }ref. https://www.php.net/manual/en/wrappers.file.php
PoC
1) Create a new filesystem. Base Path: file:///var/www/html/templates
2) Create a new asset volume. Asset Filesystem: local_bypass
3) Upload a ttml file with rce template code. Confirm poc.ttml file created in /var/www/html/templates
{{'<pre>'}} {{1337*1337}} {{['cat /etc/passwd']|map('passthru')|join}} {{['id;pwd;ls -altr /']|map('passthru')|join}}
4) Create a new route. URI: * , Template: poc.ttml
5) Confirm RCE on arbitrary path ( /* )
PoC Env
Impact
Take control of vulnerable systems, Data exfiltrations, Malware execution, Pivoting, etc.
although the vulnerability is exploitable only in the authenticated users, configuration with ALLOWADMINCHANGES=true, there is still a potential security threat (Remote Code Execution)
- Database specific
{ "nvd_published_at": "2023-08-23T21:15:08Z", "cwe_ids": [ "CWE-74" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2023-08-21T19:58:04Z" }- References
-
- https://github.com/craftcms/cms/security/advisories/GHSA-44wr-rmwq-3phw
- https://nvd.nist.gov/vuln/detail/CVE-2023-40035
- https://github.com/craftcms/cms/commit/0bd33861abdc60c93209cff03eeee54504d3d3b5
- https://github.com/craftcms/cms
- https://github.com/craftcms/cms/releases/tag/3.8.15
- https://github.com/craftcms/cms/releases/tag/4.4.15
Affected packages
Packagist / craftcms/cms
Package
- Name
- craftcms/cms
- Purl
- pkg:composer/craftcms/cms
Affected versions
4.*
4.0.0-RC1
4.0.0-RC2
4.0.0-RC3
4.0.0
4.0.0.1
4.0.1
4.0.2
4.0.3
4.0.4
4.0.5
4.0.5.1
4.0.5.2
4.0.6
4.1.0
4.1.0.1
4.1.0.2
4.1.1
4.1.2
4.1.3
4.1.4
4.1.4.1
4.2.0
4.2.0.1
4.2.0.2
4.2.1
4.2.1.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.5.1
4.2.5.2
4.2.6
4.2.7
4.2.8
4.3.0
4.3.1
4.3.2
4.3.2.1
4.3.3
4.3.4
4.3.5
4.3.6
4.3.6.1
4.3.7
4.3.7.1
4.3.8
4.3.8.1
4.3.8.2
4.3.9
4.3.10
4.3.11
4.4.0-beta.1
4.4.0-beta.2
4.4.0-beta.3
4.4.0-beta.4
4.4.0-beta.5
4.4.0-beta.6
4.4.0-beta.7
4.4.0
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
4.4.6.1
4.4.7
4.4.7.1
4.4.8
4.4.9
4.4.10
4.4.10.1
4.4.11
4.4.12
4.4.13
4.4.14
Packagist / craftcms/cms
Package
- Name
- craftcms/cms
- Purl
- pkg:composer/craftcms/cms
Affected versions
3.*
3.0.0
3.0.0.1
3.0.0.2
3.0.1
3.0.2
3.0.3
3.0.3.1
3.0.4
3.0.5
3.0.6
3.0.7
3.0.8
3.0.9
3.0.10
3.0.10.1
3.0.10.2
3.0.10.3
3.0.11
3.0.12
3.0.13
3.0.13.1
3.0.13.2
3.0.14
3.0.15
3.0.16
3.0.16.1
3.0.17
3.0.17.1
3.0.18
3.0.19
3.0.20
3.0.21
3.0.22
3.0.23
3.0.23.1
3.0.24
3.0.25
3.0.26
3.0.26.1
3.0.27
3.0.27.1
3.0.28
3.0.29
3.0.30
3.0.30.1
3.0.30.2
3.0.31
3.0.32
3.0.33
3.0.34
3.0.35
3.0.36
3.0.37
3.0.38
3.0.39
3.0.40
3.0.40.1
3.0.41
3.0.41.1
3.1.0-beta.1
3.1.0-beta.2
3.1.0-beta.3
3.1.0-beta.4
3.1.0-beta.5
3.1.0-beta.5.1
3.1.0-beta.6
3.1.0-beta.7
3.1.0
3.1.1
3.1.2
3.1.2.1
3.1.2.2
3.1.3
3.1.4
3.1.5
3.1.6
3.1.6.1
3.1.7
3.1.8
3.1.9
3.1.9.1
3.1.10
3.1.11
3.1.12
3.1.13
3.1.14
3.1.15
3.1.16
3.1.17
3.1.17.1
3.1.17.2
3.1.18
3.1.19
3.1.20
3.1.20.1
3.1.21
3.1.21.1
3.1.22
3.1.23
3.1.24
3.1.25
3.1.26
3.1.27
3.1.28
3.1.29
3.1.30
3.1.31
3.1.32
3.1.32.1
3.1.33
3.1.34
3.1.34.1
3.1.34.2
3.1.34.3
3.2.0-alpha.1
3.2.0-alpha.2
3.2.0-alpha.2.1
3.2.0-alpha.3
3.2.0-alpha.4
3.2.0-alpha.5
3.2.0-alpha.6
3.2.0-alpha.6.1
3.2.0-alpha.6.2
3.2.0-alpha.6.3
3.2.0-alpha.6.4
3.2.0-alpha.7
3.2.0-beta.1
3.2.0-beta.2
3.2.0-beta.3
3.2.0-RC1
3.2.0-RC2
3.2.0-RC3
3.2.0
3.2.1
3.2.2
3.2.3
3.2.4
3.2.4.1
3.2.5
3.2.5.1
3.2.6
3.2.7
3.2.8
3.2.9
3.2.10
3.3.0
3.3.0.1
3.3.1
3.3.1.1
3.3.1.2
3.3.2
3.3.3
3.3.4
3.3.4.1
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
3.3.10
3.3.11
3.3.12
3.3.13
3.3.14
3.3.15
3.3.16
3.3.16.1
3.3.16.2
3.3.16.3
3.3.17
3.3.18
3.3.18.1
3.3.18.2
3.3.18.3
3.3.18.4
3.3.19
3.3.20
3.3.20.1
3.4.0-beta.1
3.4.0-beta.2
3.4.0-beta.3
3.4.0-beta.4
3.4.0-beta.5
3.4.0-RC1
3.4.0-RC1.1
3.4.0-RC2
3.4.0-RC3
3.4.0
3.4.0.1
3.4.0.2
3.4.1
3.4.2
3.4.3
3.4.4
3.4.4.1
3.4.5
3.4.6
3.4.6.1
3.4.7
3.4.7.1
3.4.8
3.4.9
3.4.10
3.4.10.1
3.4.11
3.4.12
3.4.13
3.4.14
3.4.15
3.4.16
3.4.17
3.4.17.1
3.4.18
3.4.19
3.4.19.1
3.4.20
3.4.21
3.4.22
3.4.22.1
3.4.23
3.4.24
3.4.25
3.4.26
3.4.27
3.4.28
3.4.28.1
3.4.29
3.4.29.1
3.4.30
3.5.0-beta.1
3.5.0-beta.2
3.5.0-beta.3
3.5.0-RC1
3.5.0-RC1.1
3.5.0-RC2
3.5.0-RC3
3.5.0-RC4
3.5.0-RC5
3.5.0-RC6
3.5.0
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.5.7
3.5.8
3.5.9
3.5.10
3.5.10.1
3.5.11
3.5.11.1
3.5.12
3.5.12.1
3.5.13
3.5.13.1
3.5.13.2
3.5.14
3.5.15
3.5.15.1
3.5.16
3.5.17
3.5.17.1
3.5.18
3.5.19
3.5.19.1
3.6.0-beta.1
3.6.0-beta.1.1
3.6.0-beta.2
3.6.0-RC1
3.6.0-RC2
3.6.0-RC2.1
3.6.0-RC3
3.6.0-RC4
3.6.0
3.6.0.1
3.6.1
3.6.2
3.6.3
3.6.4
3.6.4.1
3.6.5
3.6.5.1
3.6.6
3.6.7
3.6.8
3.6.9
3.6.10
3.6.11
3.6.11.1
3.6.11.2
3.6.12
3.6.12.1
3.6.13
3.6.14
3.6.15
3.6.16
3.6.17
3.6.18
3.7.0-beta.1
3.7.0-beta.2
3.7.0-beta.3
3.7.0-beta.4
3.7.0-beta.5
3.7.0-beta.6
3.7.0
3.7.1
3.7.2
3.7.3
3.7.3.1
3.7.3.2
3.7.4
3.7.5
3.7.6
3.7.7
3.7.8
3.7.9
3.7.10
3.7.11
3.7.12
3.7.13
3.7.14
3.7.15
3.7.16
3.7.17
3.7.17.1
3.7.17.2
3.7.18
3.7.18.1
3.7.18.2
3.7.19
3.7.19.1
3.7.20
3.7.21
3.7.22
3.7.23
3.7.24
3.7.25
3.7.25.1
3.7.26
3.7.27
3.7.27.1
3.7.27.2
3.7.28
3.7.29
3.7.30
3.7.30.1
3.7.31
3.7.32
3.7.33
3.7.34
3.7.35
3.7.36
3.7.37
3.7.38
3.7.39
3.7.40
3.7.40.1
3.7.41
3.7.42
3.7.43
3.7.44
3.7.45
3.7.45.1
3.7.45.2
3.7.46
3.7.47
3.7.47.1
3.7.48
3.7.49
3.7.50
3.7.51
3.7.52
3.7.53
3.7.53.1
3.7.54
3.7.55
3.7.55.1
3.7.55.2
3.7.55.3
3.7.56
3.7.57
3.7.58
3.7.59
3.7.60
3.7.61
3.7.62
3.7.63
3.7.63.1
3.7.64
3.7.64.1
3.7.65
3.7.65.1
3.7.65.2
3.7.66
3.7.67
3.7.68
3.8.0-beta.1
3.8.0-beta.2
3.8.0-beta.3
3.8.0-beta.4
3.8.0-beta.5
3.8.0-beta.6
3.8.0
3.8.1
3.8.2
3.8.3
3.8.4
3.8.5
3.8.6
3.8.7
3.8.8
3.8.9
3.8.10
3.8.10.1
3.8.10.2
3.8.11
3.8.12
3.8.13
3.8.14