CVE-2022-35944: October/system Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-x4q7-m6fp-4v9v
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CVSS 7.2
CWE-94
Published
Advisory Summary

CVE-2022-35944 is a HIGH (CVSS 7.2) remote code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting October/system libraries in the Packagist ecosystem. The issue involves october cms safe mode bypass leads to authenticated remote code execution. Remediation is available by upgrading affected packages to version 2.2.34, 3.0.66.

CVE-2022-35944 at a Glance

CVE Identifier CVE-2022-35944
GHSA Identifier GHSA-x4q7-m6fp-4v9v
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product October/system
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-2022-35944

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

october/system fixed: 2.2.34 
Upgrade october/system to 2.2.34
october/system fixed: 3.0.66 
Upgrade october/system to 3.0.66
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 october/system

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-35944, inspect your project dependencies for October/system:

inspect dependencies for october/system

Analyze the terminal output to locate any version of October/system in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.34), 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In October/system, 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 vulnerability only affects installations that rely on the safe mode restriction, commonly used when providing public access to the admin panel. Assuming an attacker has access to the admin panel and permission to open the "Editor" section, they can bypass the Safe Mode (`cms.safe_mode`) restriction to introduce new PHP code in a CMS template using a specially crafted request. ### Patches The issue has been patched in v2.2.34 and v3.0.66 ### References Credits to: - David Miller ### For more information If you have any questions or comments about this advisory: - Email us at [hello@octobercms.com](mailto:hello@octobercms.com)

CVE-2022-35944 Affected October/system Versions

2 component(s)
Fixed Versions:
2.2.343.0.66
Product / Package Ecosystem Affected Versions Fixed Version
october/system
 Packagist
≥ 2.0.0
< 2.2.34
2.2.34
october/system
 Packagist
≥ 3.0.0
< 3.0.66
3.0.66

References

GitHub Advisory / Wiki ADVISORY
https://github.com/octobercms/october/security/advisories/GHSA-x4q7-m6fp-4v9v
NVD — CVE-2022-35944 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-35944
October/system Source Repository REPOSITORY
https://github.com/octobercms/october

Frequently Asked Questions

What is CVE-2022-35944?
CVE-2022-35944 is a security vulnerability in October/system involving October CMS Safe Mode bypass leads to authenticated Remote Code Execution under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which October/system versions are affected?
Affected versions include releases prior to 2.2.34, 3.0.66 across affected packages: october/system.
What version fixes CVE-2022-35944?
Upgrading to 2.2.34, 3.0.66 (or the latest patched release for your respective branch) resolves the vulnerability.
Is october/system affected?
Yes, october/system is affected in releases prior to 2.2.34, 3.0.66. Upgrade your dependency to 2.2.34, 3.0.66 or later.
What is the CVSS score of CVE-2022-35944?
CVE-2022-35944 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-2022-35944?
CVE-2022-35944 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Packagist dependencies for CVE-2022-35944?
Run the dependency tree command: 'inspect dependencies for october/system'. 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-x4q7-m6fp-4v9v",
  "modified" : "2022-10-24T18:35:38Z",
  "published" : "2022-10-13T19:11:08Z",
  "aliases" : [ "CVE-2022-35944" ],
  "summary" : "October CMS Safe Mode bypass leads to authenticated Remote Code Execution",
  "details" : "### Impact\n\nThis vulnerability only affects installations that rely on the safe mode restriction, commonly used when providing public access to the admin panel. Assuming an attacker has access to the admin panel and permission to open the \"Editor\" section, they can bypass the Safe Mode (`cms.safe_mode`) restriction to introduce new PHP code in a CMS template using a specially crafted request.\n\n### Patches\n\nThe issue has been patched in v2.2.34 and v3.0.66\n\n### References\n\nCredits to:\n\n-  David Miller\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n- Email us at [hello@octobercms.com](mailto:hello@octobercms.com)\n",
  "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" : "october/system"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.2.34"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "october/system"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.66"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/octobercms/october/security/advisories/GHSA-x4q7-m6fp-4v9v"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-35944"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/octobercms/october"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-10-13T19:11:08Z",
    "nvd_published_at" : "2022-10-13T22:15:00Z"
  }
}