CVE-2020-12469: Intelliants/subrion Subrion CMS PHP Object Injection Vulnerability

MODERATE
Advisory Identifier: GHSA-fmqq-hw9m-448q
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CVSS 6.5
CWE-502
Published
Advisory Summary

CVE-2020-12469 is a MODERATE (CVSS 6.5) subrion cms php object injection vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Intelliants/subrion libraries in the Packagist ecosystem. The issue involves subrion cms php object injection. Remediation is available in the latest vendor maintenance releases.

CVE-2020-12469 at a Glance

CVE Identifier CVE-2020-12469
GHSA Identifier GHSA-fmqq-hw9m-448q
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Intelliants/subrion
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:N/I:H/A:N).

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

How to Fix CVE-2020-12469

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

intelliants/subrion fixed: Latest secure release 
Upgrade intelliants/subrion to Latest secure release
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 intelliants/subrion

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-12469, inspect your project dependencies for Intelliants/subrion:

inspect dependencies for intelliants/subrion

Analyze the terminal output to locate any version of Intelliants/subrion in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Intelliants/subrion, 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

admin/blocks.php in Subrion CMS through 4.2.1 allows PHP Object Injection (with resultant file deletion) via serialized data in the subpages value within a block to blocks/edit.

CVE-2020-12469 Affected Intelliants/subrion Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
intelliants/subrion
 Packagist
≤ 4.2.1

References

NVD — CVE-2020-12469 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12469
belong2yourself.github.io/vulnerabilities/doc... WEB
https://belong2yourself.github.io/vulnerabilities/docs/Subrion%20CMS/Insecure%20Deserialization/Subpages%20-%20Authenticated%20PHP%20Object%20Injection/readme
Intelliants/subrion Source Repository REPOSITORY
https://github.com/belong2yourself/vulnerabilities/tree/master/Subrion%20CMS/Insecure%20Deserialization/Subpages%20-%20Authenticated%20PHP%20Object%20Injection
Intelliants/subrion Source Repository REPOSITORY
https://github.com/intelliants/subrion

Frequently Asked Questions

What is CVE-2020-12469?
CVE-2020-12469 is a security vulnerability in Intelliants/subrion involving Subrion CMS PHP Object Injection under CWE-502: Deserialization of Untrusted Data.
Which Intelliants/subrion versions are affected?
Affected versions include releases prior to current release patches across affected packages: intelliants/subrion.
What version fixes CVE-2020-12469?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is intelliants/subrion affected?
Yes, intelliants/subrion is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2020-12469?
CVE-2020-12469 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2020-12469?
CVE-2020-12469 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Packagist dependencies for CVE-2020-12469?
Run the dependency tree command: 'inspect dependencies for intelliants/subrion'. 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-fmqq-hw9m-448q",
  "modified" : "2024-04-25T21:54:38Z",
  "published" : "2022-05-24T17:16:53Z",
  "aliases" : [ "CVE-2020-12469" ],
  "summary" : "Subrion CMS PHP Object Injection",
  "details" : "admin/blocks.php in Subrion CMS through 4.2.1 allows PHP Object Injection (with resultant file deletion) via serialized data in the subpages value within a block to blocks/edit.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "intelliants/subrion"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "4.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-12469"
  }, {
    "type" : "WEB",
    "url" : "https://belong2yourself.github.io/vulnerabilities/docs/Subrion%20CMS/Insecure%20Deserialization/Subpages%20-%20Authenticated%20PHP%20Object%20Injection/readme"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/belong2yourself/vulnerabilities/tree/master/Subrion%20CMS/Insecure%20Deserialization/Subpages%20-%20Authenticated%20PHP%20Object%20Injection"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/intelliants/subrion"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-25T21:54:38Z",
    "nvd_published_at" : "2020-04-29T21:15:00Z"
  }
}