CVE-2018-11406: Symfony/symfony Symfony CSRF Token Fixation Vulnerability

HIGH
Advisory Identifier: GHSA-g4g7-q726-v5hg
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CVSS 8.8
CWE-352
Published
Advisory Summary

CVE-2018-11406 is a HIGH (CVSS 8.8) symfony csrf token fixation vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Symfony/symfony libraries in the Packagist ecosystem. The issue involves symfony csrf token fixation. Remediation is available by upgrading affected packages to version 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11.

CVE-2018-11406 at a Glance

CVE Identifier CVE-2018-11406
GHSA Identifier GHSA-g4g7-q726-v5hg
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Symfony/symfony
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2018-11406

To remediate this vulnerability, upgrade all affected Symfony/symfony dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

symfony/symfony fixed: 2.7.48 
Upgrade symfony/symfony to 2.7.48
symfony/symfony fixed: 2.8.41 
Upgrade symfony/symfony to 2.8.41
symfony/symfony fixed: 3.3.17 
Upgrade symfony/symfony to 3.3.17
symfony/symfony fixed: 3.4.11 
Upgrade symfony/symfony to 3.4.11
symfony/symfony fixed: 4.0.11 
Upgrade symfony/symfony to 4.0.11
symfony/security-bundle fixed: 2.7.48 
Upgrade symfony/security-bundle to 2.7.48
symfony/security-bundle fixed: 2.8.41 
Upgrade symfony/security-bundle to 2.8.41
symfony/security-bundle fixed: 3.3.17 
Upgrade symfony/security-bundle to 3.3.17
symfony/security-bundle fixed: 3.4.11 
Upgrade symfony/security-bundle to 3.4.11
symfony/security-bundle fixed: 4.0.11 
Upgrade symfony/security-bundle to 4.0.11
symfony/security-http fixed: 2.7.48 
Upgrade symfony/security-http to 2.7.48
symfony/security-http fixed: 2.8.41 
Upgrade symfony/security-http to 2.8.41
symfony/security-http fixed: 3.3.17 
Upgrade symfony/security-http to 3.3.17
symfony/security-http fixed: 3.4.11 
Upgrade symfony/security-http to 3.4.11
symfony/security-http fixed: 4.0.11 
Upgrade symfony/security-http to 4.0.11
symfony/security fixed: 2.7.48 
Upgrade symfony/security to 2.7.48
symfony/security fixed: 2.8.41 
Upgrade symfony/security to 2.8.41
symfony/security fixed: 3.3.17 
Upgrade symfony/security to 3.3.17
symfony/security fixed: 3.4.11 
Upgrade symfony/security to 3.4.11
symfony/security fixed: 4.0.11 
Upgrade symfony/security to 4.0.11
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 symfony/symfony

How to Check if You Are Affected

To determine whether your application is affected by CVE-2018-11406, inspect your project dependencies for Symfony/symfony:

inspect dependencies for symfony/symfony

Analyze the terminal output to locate any version of Symfony/symfony in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.7.48), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Symfony/symfony, 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

An issue was discovered in the Security component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. By default, a user's session is invalidated when the user is logged out. This behavior can be disabled through the invalidate_session option. In this case, CSRF tokens were not erased during logout which allowed for CSRF token fixation.

CVE-2018-11406 Affected Symfony/symfony Versions

20 component(s)
Fixed Versions:
2.7.482.8.413.3.173.4.114.0.11
Product / Package Ecosystem Affected Versions Fixed Version
symfony/symfony
 Packagist
≥ 2.7.0
< 2.7.48
2.7.48
symfony/symfony
 Packagist
≥ 2.8.0
< 2.8.41
2.8.41
symfony/symfony
 Packagist
≥ 3.0.0
< 3.3.17
3.3.17
symfony/symfony
 Packagist
≥ 3.4.0
< 3.4.11
3.4.11
symfony/symfony
 Packagist
≥ 4.0.0
< 4.0.11
4.0.11
symfony/security-bundle
 Packagist
≥ 2.7.0
< 2.7.48
2.7.48
symfony/security-bundle
 Packagist
≥ 2.8.0
< 2.8.41
2.8.41
symfony/security-bundle
 Packagist
≥ 3.0.0
< 3.3.17
3.3.17
symfony/security-bundle
 Packagist
≥ 3.4.0
< 3.4.11
3.4.11
symfony/security-bundle
 Packagist
≥ 4.0.0
< 4.0.11
4.0.11
symfony/security-http
 Packagist
≥ 2.7.0
< 2.7.48
2.7.48
symfony/security-http
 Packagist
≥ 2.8.0
< 2.8.41
2.8.41
symfony/security-http
 Packagist
≥ 3.0.0
< 3.3.17
3.3.17
symfony/security-http
 Packagist
≥ 3.4.0
< 3.4.11
3.4.11
symfony/security-http
 Packagist
≥ 4.0.0
< 4.0.11
4.0.11
symfony/security
 Packagist
≥ 2.7.0
< 2.7.48
2.7.48
symfony/security
 Packagist
≥ 2.8.0
< 2.8.41
2.8.41
symfony/security
 Packagist
≥ 3.0.0
< 3.3.17
3.3.17
symfony/security
 Packagist
≥ 3.4.0
< 3.4.11
3.4.11
symfony/security
 Packagist
≥ 4.0.0
< 4.0.11
4.0.11

References

NVD — CVE-2018-11406 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-11406
Security Fix Commit FIX COMMIT
https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1
Symfony/symfony Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml
Symfony/symfony Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml
Symfony/symfony Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11406.yaml
Symfony/symfony Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11406.yaml
Symfony/symfony Source Repository REPOSITORY
https://github.com/symfony/symfony
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH
symfony.com/blog/cve-2018-11406... WEB
https://symfony.com/blog/cve-2018-11406-csrf-token-fixation
symfony.com/cve-2018-11406 WEB
https://symfony.com/cve-2018-11406
Symfony/symfony Security Information SECURITY
https://www.debian.org/security/2018/dsa-4262

Frequently Asked Questions

What is CVE-2018-11406?
CVE-2018-11406 is a security vulnerability in Symfony/symfony involving Symfony CSRF Token Fixation under CWE-352: Cross-Site Request Forgery (CSRF).
Which Symfony/symfony versions are affected?
Affected versions include releases prior to 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11 across affected packages: symfony/symfony, symfony/security-bundle, symfony/security-http, symfony/security.
What version fixes CVE-2018-11406?
Upgrading to 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11 (or the latest patched release for your respective branch) resolves the vulnerability.
Is symfony/symfony affected?
Yes, symfony/symfony is affected in releases prior to 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11. Upgrade your dependency to 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11 or later.
Is symfony/security-bundle affected?
Yes, symfony/security-bundle is affected in releases prior to 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11. Upgrade your dependency to 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11 or later.
What is the CVSS score of CVE-2018-11406?
CVE-2018-11406 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2018-11406?
CVE-2018-11406 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2018-11406?
Run the dependency tree command: 'inspect dependencies for symfony/symfony'. 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-g4g7-q726-v5hg",
  "modified" : "2024-02-08T19:30:02Z",
  "published" : "2022-05-14T01:14:35Z",
  "aliases" : [ "CVE-2018-11406" ],
  "summary" : "Symfony CSRF Token Fixation",
  "details" : "An issue was discovered in the Security component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. By default, a user's session is invalidated when the user is logged out. This behavior can be disabled through the invalidate_session option. In this case, CSRF tokens were not erased during logout which allowed for CSRF token fixation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
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      "name" : "symfony/symfony"
    },
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    } ]
  }, {
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    "ranges" : [ {
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  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/security-http"
    },
    "ranges" : [ {
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      "events" : [ {
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      }, {
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  }, {
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      "name" : "symfony/security-http"
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    } ]
  }, {
    "package" : {
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    "ranges" : [ {
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    "package" : {
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      "events" : [ {
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  }, {
    "package" : {
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      "name" : "symfony/security"
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  }, {
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      "name" : "symfony/security"
    },
    "ranges" : [ {
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      "name" : "symfony/security"
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    "ranges" : [ {
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  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symfony/security"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
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        "fixed" : "4.0.11"
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    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-11406"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/symfony/symfony/commit/319e1bdd43979d9c1559497de8d69adea28ab8d1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2018-11406.yaml"
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    "type" : "WEB",
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  }, {
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  }, {
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    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH"
  }, {
    "type" : "WEB",
    "url" : "https://symfony.com/blog/cve-2018-11406-csrf-token-fixation"
  }, {
    "type" : "WEB",
    "url" : "https://symfony.com/cve-2018-11406"
  }, {
    "type" : "WEB",
    "url" : "https://www.debian.org/security/2018/dsa-4262"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-22T00:04:30Z",
    "nvd_published_at" : "2018-06-13T16:29:00Z"
  }
}