CVE-2020-15515: Marcwillmann/turn Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-q7j5-9j77-g4gq
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CVSS 8.8
CWE-74
Published
Advisory Summary

CVE-2020-15515 is a HIGH (CVSS 8.8) remote code execution vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Marcwillmann/turn libraries in the Packagist ecosystem. The issue involves remote code execution in turn extension for typo3. Remediation is available by upgrading affected packages to version 0.3.3.

CVE-2020-15515 at a Glance

CVE Identifier CVE-2020-15515
GHSA Identifier GHSA-q7j5-9j77-g4gq
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Product Marcwillmann/turn
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-2020-15515

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

marcwillmann/turn fixed: 0.3.3 
Upgrade marcwillmann/turn to 0.3.3
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 marcwillmann/turn

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-15515, inspect your project dependencies for Marcwillmann/turn:

inspect dependencies for marcwillmann/turn

Analyze the terminal output to locate any version of Marcwillmann/turn in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.3), 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-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. In Marcwillmann/turn, 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

The turn extension through 0.3.2 for TYPO3 allows Remote Code Execution.

CVE-2020-15515 Affected Marcwillmann/turn Versions

1 component(s)
Fixed Versions:
0.3.3
Product / Package Ecosystem Affected Versions Fixed Version
marcwillmann/turn
 Packagist
< 0.3.3
0.3.3

References

NVD — CVE-2020-15515 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15515
Marcwillmann/turn Security Information SECURITY
https://typo3.org/help/security-advisories
Marcwillmann/turn Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2020-011

Frequently Asked Questions

What is CVE-2020-15515?
CVE-2020-15515 is a security vulnerability in Marcwillmann/turn involving Remote code execution in turn extension for TYPO3 under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Marcwillmann/turn versions are affected?
Affected versions include releases prior to 0.3.3 across affected packages: marcwillmann/turn.
What version fixes CVE-2020-15515?
Upgrading to 0.3.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is marcwillmann/turn affected?
Yes, marcwillmann/turn is affected in releases prior to 0.3.3. Upgrade your dependency to 0.3.3 or later.
What is the CVSS score of CVE-2020-15515?
CVE-2020-15515 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-2020-15515?
CVE-2020-15515 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check Packagist dependencies for CVE-2020-15515?
Run the dependency tree command: 'inspect dependencies for marcwillmann/turn'. 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-q7j5-9j77-g4gq",
  "modified" : "2021-07-29T20:50:40Z",
  "published" : "2020-07-29T18:07:41Z",
  "aliases" : [ "CVE-2020-15515" ],
  "summary" : "Remote code execution in turn extension for TYPO3",
  "details" : "The turn extension through 0.3.2 for TYPO3 allows Remote Code Execution.",
  "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" : "marcwillmann/turn"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-15515"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/help/security-advisories"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2020-011"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-07-29T18:00:39Z",
    "nvd_published_at" : "2020-07-07T16:15:00Z"
  }
}