CVE-2020-36070: Tcg/voyager Remote Code Execution Vulnerability

CRITICAL
Advisory Identifier: GHSA-2x3r-7jgm-gh8x
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CVSS 9.8
CWE-281
Published
Advisory Summary

CVE-2020-36070 is a CRITICAL (CVSS 9.8) remote code execution vulnerability (CWE-281: Improper Preservation of Permissions) affecting Tcg/voyager libraries in the Packagist ecosystem. The issue involves remote code execution in voyager. Remediation is available in the latest vendor maintenance releases.

CVE-2020-36070 at a Glance

CVE Identifier CVE-2020-36070
GHSA Identifier GHSA-2x3r-7jgm-gh8x
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-281: Improper Preservation of Permissions
Affected Product Tcg/voyager
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2020-36070

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

tcg/voyager fixed: Latest secure release 
Upgrade tcg/voyager 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 tcg/voyager

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36070, inspect your project dependencies for Tcg/voyager:

inspect dependencies for tcg/voyager

Analyze the terminal output to locate any version of Tcg/voyager 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-281: Improper Preservation of Permissions, where the product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended. In Tcg/voyager, 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

Insecure Permission vulnerability found in Voyager v.1.4 and before allows a remote attacker to execute arbitrary code via a crafted .php file to the media component.

CVE-2020-36070 Affected Tcg/voyager Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
tcg/voyager
 Packagist
≤ 1.4.0

References

NVD — CVE-2020-36070 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36070
Tcg/voyager Source Repository REPOSITORY
https://github.com/the-control-group/voyager

Frequently Asked Questions

What is CVE-2020-36070?
CVE-2020-36070 is a security vulnerability in Tcg/voyager involving Remote code execution in Voyager under CWE-281: Improper Preservation of Permissions.
Which Tcg/voyager versions are affected?
Affected versions include releases prior to current release patches across affected packages: tcg/voyager.
What version fixes CVE-2020-36070?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is tcg/voyager affected?
Yes, tcg/voyager 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-2020-36070?
CVE-2020-36070 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-36070?
CVE-2020-36070 is classified under CWE-281: Improper Preservation of Permissions (The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.).
How can I check Packagist dependencies for CVE-2020-36070?
Run the dependency tree command: 'inspect dependencies for tcg/voyager'. 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-2x3r-7jgm-gh8x",
  "modified" : "2023-05-05T20:33:39Z",
  "published" : "2023-04-26T21:30:37Z",
  "aliases" : [ "CVE-2020-36070" ],
  "summary" : "Remote code execution in Voyager",
  "details" : "Insecure Permission vulnerability found in Voyager v.1.4 and before allows a remote attacker to execute arbitrary code via a crafted .php file to the media component.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "tcg/voyager"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36070"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/the-control-group/voyager"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-281" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-04-27T14:00:37Z",
    "nvd_published_at" : "2023-04-26T20:15:09Z"
  }
}