CVE-2019-19714: Contao/core bundle Insert Tag Injection Vulnerability

MODERATE
Advisory Identifier: GHSA-jc43-qrrp-98f5
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CVSS 5.3
CWE-116
Published
Advisory Summary

CVE-2019-19714 is a MODERATE (CVSS 5.3) insert tag injection vulnerability (CWE-116: Improper Encoding or Escaping of Output) affecting Contao/core bundle libraries in the Packagist ecosystem. The issue involves insert tag injection in the contao login module. Remediation is available by upgrading affected packages to version 4.8.6.

CVE-2019-19714 at a Glance

CVE Identifier CVE-2019-19714
GHSA Identifier GHSA-jc43-qrrp-98f5
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-116: Improper Encoding or Escaping of Output
Affected Product Contao/core bundle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2019-19714

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.

contao/core-bundle fixed: 4.8.6 
Upgrade contao/core-bundle to 4.8.6
contao/contao fixed: 4.8.6 
Upgrade contao/contao to 4.8.6
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for contao/core-bundle

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-19714, inspect your project dependencies for Contao/core bundle:

inspect dependencies for contao/core-bundle

Analyze 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 4.8.6), 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-116: Improper Encoding or Escaping of Output, where the product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. as a result, the intended structure of the message is not preserved. 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

### Impact It is possible to inject insert tags into the login module which will be replaced when the page is rendered. ### Patches Update to Contao 4.8.6. ### Workarounds None. ### References https://contao.org/en/security-advisories/insert-tag-injection-in-the-login-module ### For more information If you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).

CVE-2019-19714 Affected Contao/core bundle Versions

2 component(s)
Fixed Versions:
4.8.6
Product / Package Ecosystem Affected Versions Fixed Version
contao/core-bundle
 Packagist
≥ 4.8.4
< 4.8.6
4.8.6
contao/contao
 Packagist
≥ 4.8.4
< 4.8.6
4.8.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/contao/contao/security/advisories/GHSA-jc43-qrrp-98f5
NVD — CVE-2019-19714 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19714
Contao/core bundle Security Information SECURITY
https://contao.org/en/security-advisories/insert-tag-injection-in-the-login-module.html
Contao/core bundle Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2019-19714.yaml
Contao/core bundle Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2019-19714.yaml
Contao/core bundle Source Repository REPOSITORY
https://github.com/contao/contao

Frequently Asked Questions

What is CVE-2019-19714?
CVE-2019-19714 is a security vulnerability in Contao/core bundle involving Insert tag injection in the Contao login module under CWE-116: Improper Encoding or Escaping of Output.
Which Contao/core bundle versions are affected?
Affected versions include releases prior to 4.8.6 across affected packages: contao/core-bundle, contao/contao.
What version fixes CVE-2019-19714?
Upgrading to 4.8.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is contao/core-bundle affected?
Yes, contao/core-bundle is affected in releases prior to 4.8.6. Upgrade your dependency to 4.8.6 or later.
Is contao/contao affected?
Yes, contao/contao is affected in releases prior to 4.8.6. Upgrade your dependency to 4.8.6 or later.
What is the CVSS score of CVE-2019-19714?
CVE-2019-19714 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2019-19714?
CVE-2019-19714 is classified under CWE-116: Improper Encoding or Escaping of Output (The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.).
How can I check Packagist dependencies for CVE-2019-19714?
Run the dependency tree command: 'inspect dependencies for contao/core-bundle'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jc43-qrrp-98f5",
  "modified" : "2024-04-22T18:41:09Z",
  "published" : "2019-12-17T22:53:40Z",
  "aliases" : [ "CVE-2019-19714" ],
  "summary" : "Insert tag injection in the Contao login module",
  "details" : "### Impact\n\nIt is possible to inject insert tags into the login module which will be replaced when the page is rendered.\n\n### Patches\n\nUpdate to Contao 4.8.6.\n\n### Workarounds\n\nNone.\n\n### References\n\nhttps://contao.org/en/security-advisories/insert-tag-injection-in-the-login-module\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:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "contao/core-bundle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.8.4"
      }, {
        "fixed" : "4.8.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "contao/contao"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.8.4"
      }, {
        "fixed" : "4.8.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/contao/contao/security/advisories/GHSA-jc43-qrrp-98f5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-19714"
  }, {
    "type" : "WEB",
    "url" : "https://contao.org/en/security-advisories/insert-tag-injection-in-the-login-module.html"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2019-19714.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2019-19714.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/contao/contao"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-116" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-12-17T19:35:29Z",
    "nvd_published_at" : null
  }
}