CVE-2018-19422: Intelliants/subrion Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-73xj-v6gc-g5p5
Share
CVSS 7.2
CWE-434
Published
Advisory Summary

CVE-2018-19422 is a HIGH (CVSS 7.2) remote code execution vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Intelliants/subrion libraries in the Packagist ecosystem. The issue involves subrion cms rce vulnerability. Remediation is available by upgrading affected packages to version 4.2.2.

CVE-2018-19422 at a Glance

CVE Identifier CVE-2018-19422
GHSA Identifier GHSA-73xj-v6gc-g5p5
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Intelliants/subrion
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
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-2018-19422

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: 4.2.2 
Upgrade intelliants/subrion to 4.2.2
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 intelliants/subrion

How to Check if You Are Affected

To determine whether your application is affected by CVE-2018-19422, 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 4.2.2), 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-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. 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

`/panel/uploads` in Subrion CMS 4.2.1 allows remote attackers to execute arbitrary PHP code via a .pht or .phar file, because the .htaccess file omits these.

CVE-2018-19422 Affected Intelliants/subrion Versions

1 component(s)
Fixed Versions:
4.2.2
Product / Package Ecosystem Affected Versions Fixed Version
intelliants/subrion
 Packagist
< 4.2.2
4.2.2

References

NVD — CVE-2018-19422 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-19422
Intelliants/subrion Source Repository REPOSITORY
https://github.com/intelliants/subrion/issues/801
Security Fix Commit FIX COMMIT
https://github.com/intelliants/subrion/commit/74359bcfaea424edda6d782a8ac25397c55972ab
Intelliants/subrion Security Information SECURITY
http://packetstormsecurity.com/files/162591/Subrion-CMS-4.2.1-Shell-Upload.html
Intelliants/subrion Security Information SECURITY
http://packetstormsecurity.com/files/173998/Intelliants-Subrion-CMS-4.2.1-Remote-Code-Execution.html

Frequently Asked Questions

What is CVE-2018-19422?
CVE-2018-19422 is a security vulnerability in Intelliants/subrion involving Subrion CMS RCE Vulnerability under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Intelliants/subrion versions are affected?
Affected versions include releases prior to 4.2.2 across affected packages: intelliants/subrion.
What version fixes CVE-2018-19422?
Upgrading to 4.2.2 (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 4.2.2. Upgrade your dependency to 4.2.2 or later.
What is the CVSS score of CVE-2018-19422?
CVE-2018-19422 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2018-19422?
CVE-2018-19422 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check Packagist dependencies for CVE-2018-19422?
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-73xj-v6gc-g5p5",
  "modified" : "2023-08-29T19:32:42Z",
  "published" : "2022-05-13T01:10:00Z",
  "aliases" : [ "CVE-2018-19422" ],
  "summary" : "Subrion CMS RCE Vulnerability",
  "details" : "`/panel/uploads` in Subrion CMS 4.2.1 allows remote attackers to execute arbitrary PHP code via a .pht or .phar file, because the .htaccess file omits these.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "intelliants/subrion"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.2.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 4.2.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-19422"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/intelliants/subrion/issues/801"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/intelliants/subrion/commit/74359bcfaea424edda6d782a8ac25397c55972ab"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/162591/Subrion-CMS-4.2.1-Shell-Upload.html"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/173998/Intelliants-Subrion-CMS-4.2.1-Remote-Code-Execution.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-29T19:32:42Z",
    "nvd_published_at" : "2018-11-21T21:29:00Z"
  }
}