CVE-2019-19745: Contao/core bundle Unrestricted File Uploads Vulnerability
HIGHCVE-2019-19745 is a HIGH (CVSS 8.8) unrestricted file uploads vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Contao/core bundle libraries in the Packagist ecosystem. The issue involves unrestricted file uploads in contao. Remediation is available by upgrading affected packages to version 4.4.46, 4.8.6.
CVE-2019-19745 at a Glance
Security Impact
CVSS: 8.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2019-19745
To remediate this vulnerability, upgrade all affected Contao/core bundle dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade contao/core-bundle to 4.4.46Upgrade contao/core-bundle to 4.8.6Upgrade contao/contao to 4.4.46Upgrade contao/contao to 4.8.6Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for contao/core-bundleHow to Check if You Are Affected
To determine whether your application is affected by CVE-2019-19745, inspect your project dependencies for Contao/core bundle:
inspect dependencies for contao/core-bundleAnalyze the terminal output to locate any version of Contao/core bundle in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.4.46), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In Contao/core bundle, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2019-19745 Affected Contao/core bundle Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
contao/core-bundle
|
Packagist |
≥ 4.0.0
< 4.4.46
|
4.4.46
|
|
contao/core-bundle
|
Packagist |
≥ 4.5.0
< 4.8.6
|
4.8.6
|
|
contao/contao
|
Packagist |
≥ 4.0.0
< 4.4.46
|
4.4.46
|
|
contao/contao
|
Packagist |
≥ 4.5.0
< 4.8.6
|
4.8.6
|
References
Frequently Asked Questions
What is CVE-2019-19745?
Which Contao/core bundle versions are affected?
What version fixes CVE-2019-19745?
Is contao/core-bundle affected?
Is contao/contao affected?
What is the CVSS score of CVE-2019-19745?
What CWE is associated with CVE-2019-19745?
How can I check Packagist dependencies for CVE-2019-19745?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-wjx8-cgrm-hh8p",
"modified" : "2024-04-22T18:41:39Z",
"published" : "2019-12-17T22:53:10Z",
"aliases" : [ "CVE-2019-19745" ],
"summary" : "Unrestricted file uploads in Contao",
"details" : "### Impact\n\nA back end user with access to the form generator can upload arbitrary files and execute them on the server.\n\n### Patches\n\nUpdate to Contao 4.4.46 or 4.8.6.\n\n### Workarounds\n\nConfigure your web server so it does not execute PHP files and other scripts in the Contao file upload directory.\n\n### References\n\nhttps://contao.org/en/security-advisories/unrestricted-file-uploads\n\n### For more information\n\nIf you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).\n",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "contao/core-bundle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.0.0"
}, {
"fixed" : "4.4.46"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "contao/core-bundle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.5.0"
}, {
"fixed" : "4.8.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "contao/contao"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.0.0"
}, {
"fixed" : "4.4.46"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "contao/contao"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.5.0"
}, {
"fixed" : "4.8.6"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/contao/contao/security/advisories/GHSA-wjx8-cgrm-hh8p"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-19745"
}, {
"type" : "WEB",
"url" : "https://contao.org/en/news.html"
}, {
"type" : "WEB",
"url" : "https://contao.org/en/security-advisories/unrestricted-file-uploads.html"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2019-19745.yaml"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2019-19745.yaml"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/contao/contao"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-434" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2019-12-17T19:42:31Z",
"nvd_published_at" : "2019-12-17T15:15:25Z"
}
}