CVE-2021-43464: Intelliants/subrion Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-g54x-29xv-58h5
Share
CVSS 8.8
Published
Advisory Summary

CVE-2021-43464 is a HIGH (CVSS 8.8) remote code execution vulnerability (General Security Weakness) affecting Intelliants/subrion libraries in the Packagist ecosystem. The issue involves remote code execution in subrion. Remediation is available in the latest vendor maintenance releases.

CVE-2021-43464 at a Glance

CVE Identifier CVE-2021-43464
GHSA Identifier GHSA-g54x-29xv-58h5
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification General Security Weakness
Affected Product Intelliants/subrion
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:L/UI:N/S:U/C:H/I:H/A:H).

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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-43464

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-2021-43464, 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 General Security Weakness. 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

Subrion is an open source php content management system. A Remiote Code Execution (RCE) vulnerability exiss in Subrion CMS 4.2.1 via modified code in a background field; when the information is modified, the data in it will be executed through eval().

CVE-2021-43464 Affected Intelliants/subrion Versions

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

References

NVD — CVE-2021-43464 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43464
Intelliants/subrion Source Repository REPOSITORY
https://github.com/intelliants/subrion/issues/888
Intelliants/subrion Source Repository REPOSITORY
https://github.com/intelliants/subrion

Frequently Asked Questions

What is CVE-2021-43464?
CVE-2021-43464 is a security vulnerability in Intelliants/subrion involving Remote code execution in Subrion under General Security Weakness.
Which Intelliants/subrion versions are affected?
Affected versions include releases prior to current release patches across affected packages: intelliants/subrion.
What version fixes CVE-2021-43464?
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-2021-43464?
CVE-2021-43464 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-43464?
CVE-2021-43464 is classified under General Security Weakness.
How can I check Packagist dependencies for CVE-2021-43464?
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-g54x-29xv-58h5",
  "modified" : "2022-04-15T02:46:19Z",
  "published" : "2022-04-05T00:00:23Z",
  "aliases" : [ "CVE-2021-43464" ],
  "summary" : "Remote code execution in Subrion",
  "details" : "Subrion is an open source php content management system. A Remiote Code Execution (RCE) vulnerability exiss in Subrion CMS 4.2.1 via modified code in a background field; when the information is modified, the data in it will be executed through eval().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "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-2021-43464"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/intelliants/subrion/issues/888"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/intelliants/subrion"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-04-07T15:16:10Z",
    "nvd_published_at" : "2022-04-04T18:15:00Z"
  }
}