CVE-2020-35124: Mautic/core Cross-Site Scripting Vulnerability

CRITICAL
Advisory Identifier: GHSA-39wj-j3jc-858m
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CWE-79
Published
Advisory Summary

CVE-2020-35124 is a CRITICAL cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Mautic/core libraries in the Packagist ecosystem. The issue involves xss vulnerability leveraged through referrers could allow un-authorized admin access in mautic. Remediation is available by upgrading affected packages to version 3.2.4, 2.16.5.

CVE-2020-35124 at a Glance

CVE Identifier CVE-2020-35124
GHSA Identifier GHSA-39wj-j3jc-858m
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Mautic/core
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2020-35124

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

mautic/core fixed: 3.2.4 
Upgrade mautic/core to 3.2.4
mautic/core fixed: 2.16.5 
Upgrade mautic/core to 2.16.5
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 mautic/core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-35124, inspect your project dependencies for Mautic/core:

inspect dependencies for mautic/core

Analyze the terminal output to locate any version of Mautic/core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.2.4), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Mautic/core, 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 This is a cross-site scripting vulnerability which affects every version of Mautic and could allow an attacker unauthorised administrator level access to Mautic. This vulnerability was reported by Naveen Sunkavally at Horizon3.ai. ### Patches Upgrade to 3.2.4 or 2.16.5. Link to patch for 2.x versions: https://github.com/mautic/mautic/compare/2.16.4...2.16.5.diff Link to patch for 3.x versions: https://github.com/mautic/mautic/compare/3.2.2...3.2.4.diff ### Workarounds None ### For more information If you have any questions or comments about this advisory: * Post in https://forum.mautic.org/c/support * Email us at security@mautic.org

CVE-2020-35124 Affected Mautic/core Versions

2 component(s)
Fixed Versions:
3.2.42.16.5
Product / Package Ecosystem Affected Versions Fixed Version
mautic/core
 Packagist
≥ 3.0.0
< 3.2.4
3.2.4
mautic/core
 Packagist
≥ 2.0.0
< 2.16.5
2.16.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858m
NVD — CVE-2020-35124 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35124
Security Fix Commit FIX COMMIT
https://github.com/mautic/mautic/commit/20c5dc39b62164f6922ce53ea42cbb4ccec64e57
forum.mautic.org/c/announcements/16 WEB
https://forum.mautic.org/c/announcements/16
Mautic/core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/mautic/core/CVE-2020-35124.yaml
packagist.org/packages/mautic/cor... WEB
https://packagist.org/packages/mautic/core
www.horizon3.ai/disclosures/mautic-... WEB
https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rce
Mautic/core Release RELEASE
https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4

Frequently Asked Questions

What is CVE-2020-35124?
CVE-2020-35124 is a security vulnerability in Mautic/core involving XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Mautic/core versions are affected?
Affected versions include releases prior to 3.2.4, 2.16.5 across affected packages: mautic/core.
What version fixes CVE-2020-35124?
Upgrading to 3.2.4, 2.16.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mautic/core affected?
Yes, mautic/core is affected in releases prior to 3.2.4, 2.16.5. Upgrade your dependency to 3.2.4, 2.16.5 or later.
What CWE is associated with CVE-2020-35124?
CVE-2020-35124 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2020-35124?
Run the dependency tree command: 'inspect dependencies for mautic/core'. 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-39wj-j3jc-858m",
  "modified" : "2021-01-19T20:43:12Z",
  "published" : "2021-01-19T20:43:56Z",
  "aliases" : [ "CVE-2020-35124" ],
  "summary" : "XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic",
  "details" : "### Impact\nThis is a cross-site scripting vulnerability which affects every version of Mautic and could allow an attacker unauthorised administrator level access to Mautic.\n\nThis vulnerability was reported by Naveen Sunkavally at Horizon3.ai.\n\n### Patches\nUpgrade to 3.2.4 or 2.16.5.\n\nLink to patch for 2.x versions: https://github.com/mautic/mautic/compare/2.16.4...2.16.5.diff\n\nLink to patch for 3.x versions: https://github.com/mautic/mautic/compare/3.2.2...3.2.4.diff\n\n### Workarounds\nNone\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Post in https://forum.mautic.org/c/support\n* Email us at security@mautic.org",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mautic/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.2.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mautic/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.16.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858m"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-35124"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mautic/mautic/commit/20c5dc39b62164f6922ce53ea42cbb4ccec64e57"
  }, {
    "type" : "WEB",
    "url" : "https://forum.mautic.org/c/announcements/16"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/mautic/core/CVE-2020-35124.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://packagist.org/packages/mautic/core"
  }, {
    "type" : "WEB",
    "url" : "https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rce"
  }, {
    "type" : "WEB",
    "url" : "https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-01-19T20:43:12Z",
    "nvd_published_at" : "2021-01-28T06:15:00Z"
  }
}