CVE-2019-12437: Silverstripe/graphql Silverstripe CSRF Protection Bypass Vulnerability

HIGH
Advisory Identifier: GHSA-fx37-56v6-85q6
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CVSS 8.8
CWE-352
Published
Advisory Summary

CVE-2019-12437 is a HIGH (CVSS 8.8) silverstripe csrf protection bypass vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Silverstripe/graphql libraries in the Packagist ecosystem. The issue involves silverstripe csrf protection bypass via graphql. Remediation is available by upgrading affected packages to version 2.0.5, 3.1.2.

CVE-2019-12437 at a Glance

CVE Identifier CVE-2019-12437
GHSA Identifier GHSA-fx37-56v6-85q6
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Silverstripe/graphql
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:3.1/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-2019-12437

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

silverstripe/graphql fixed: 2.0.5 
Upgrade silverstripe/graphql to 2.0.5
silverstripe/graphql fixed: 3.1.2 
Upgrade silverstripe/graphql to 3.1.2
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 silverstripe/graphql

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-12437, inspect your project dependencies for Silverstripe/graphql:

inspect dependencies for silverstripe/graphql

Analyze the terminal output to locate any version of Silverstripe/graphql in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.5), 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 Silverstripe/graphql, 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

In SilverStripe/GraphQL prior to 2.0.5 and 3.1.2, the previous fix for SS-2018-007 does not completely mitigate the risk of CSRF in GraphQL mutations.

CVE-2019-12437 Affected Silverstripe/graphql Versions

2 component(s)
Fixed Versions:
2.0.53.1.2
Product / Package Ecosystem Affected Versions Fixed Version
silverstripe/graphql
 Packagist
≥ 2.0.0
< 2.0.5
2.0.5
silverstripe/graphql
 Packagist
≥ 3.1.0
< 3.1.2
3.1.2

References

NVD — CVE-2019-12437 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12437
Security Fix Commit FIX COMMIT
https://github.com/silverstripe/silverstripe-graphql/commit/3c1dd6b839b7c0e2cbc85074bb5840ebded6097c
Security Fix Commit FIX COMMIT
https://github.com/silverstripe/silverstripe-graphql/commit/db28f3075ae2335905f43ac808e9177497e354ff
Silverstripe/graphql Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/graphql/CVE-2019-12437.yaml
Silverstripe/graphql Source Repository REPOSITORY
https://github.com/silverstripe/silverstripe-graphql
Silverstripe/graphql Release RELEASE
https://www.silverstripe.org/download/security-releases/cve-2019-12437

Frequently Asked Questions

What is CVE-2019-12437?
CVE-2019-12437 is a security vulnerability in Silverstripe/graphql involving Silverstripe CSRF Protection Bypass via GraphQL under CWE-352: Cross-Site Request Forgery (CSRF).
Which Silverstripe/graphql versions are affected?
Affected versions include releases prior to 2.0.5, 3.1.2 across affected packages: silverstripe/graphql.
What version fixes CVE-2019-12437?
Upgrading to 2.0.5, 3.1.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is silverstripe/graphql affected?
Yes, silverstripe/graphql is affected in releases prior to 2.0.5, 3.1.2. Upgrade your dependency to 2.0.5, 3.1.2 or later.
What is the CVSS score of CVE-2019-12437?
CVE-2019-12437 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-12437?
CVE-2019-12437 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-2019-12437?
Run the dependency tree command: 'inspect dependencies for silverstripe/graphql'. 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-fx37-56v6-85q6",
  "modified" : "2023-09-26T20:39:11Z",
  "published" : "2022-05-24T17:09:19Z",
  "aliases" : [ "CVE-2019-12437" ],
  "summary" : "Silverstripe CSRF Protection Bypass via GraphQL",
  "details" : "In SilverStripe/GraphQL prior to 2.0.5 and 3.1.2, the previous fix for SS-2018-007 does not completely mitigate the risk of CSRF in GraphQL mutations.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "silverstripe/graphql"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.0.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "silverstripe/graphql"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.1.0"
      }, {
        "fixed" : "3.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-12437"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/silverstripe/silverstripe-graphql/commit/3c1dd6b839b7c0e2cbc85074bb5840ebded6097c"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/silverstripe/silverstripe-graphql/commit/db28f3075ae2335905f43ac808e9177497e354ff"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/graphql/CVE-2019-12437.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/silverstripe/silverstripe-graphql"
  }, {
    "type" : "WEB",
    "url" : "https://www.silverstripe.org/download/security-releases/cve-2019-12437"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-19T00:01:19Z",
    "nvd_published_at" : "2020-02-19T17:15:00Z"
  }
}