CVE-2023-41047: OctoPrint OctoPrint Vulnerable To Improper Neutralization Vulnerability

HIGH
Advisory Identifier: GHSA-fwfg-vprh-97ph
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CVSS 6.5
CWE-1336
Published
Advisory Summary

CVE-2023-41047 is a HIGH (CVSS 6.5) octoprint vulnerable to improper neutralization vulnerability (CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine) affecting OctoPrint libraries in the PyPI ecosystem. The issue involves octoprint vulnerable to improper neutralization of special elements used in a template engine. Remediation is available by upgrading affected packages to version 1.9.3.

CVE-2023-41047 at a Glance

CVE Identifier CVE-2023-41047
GHSA Identifier GHSA-fwfg-vprh-97ph
Severity HIGH
CVSS v3.1 Base Score 6.5
CWE Classification CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine
Affected Product OctoPrint
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2023-41047

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

OctoPrint fixed: 1.9.3 
pip install OctoPrint>=1.9.3
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show OctoPrint

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2023-41047, inspect your installed packages using pip:

pip show OctoPrint

Analyze the terminal output to locate any version of OctoPrint in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.9.3), your application is affected.

Note: The pip show OctoPrint command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine, where the product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. In OctoPrint, 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 OctoPrint versions up until and including 1.9.2 contain a vulnerability that allows malicious admins to configure a specially crafted [GCODE script](https://docs.octoprint.org/en/master/features/gcode_scripts.html) through the Settings that will allow code execution during rendering of that script. An attacker might use this to extract data managed by OctoPrint, or manipulate data managed by OctoPrint, as well as execute arbitrary commands with the rights of the OctoPrint process on the server system. Please note that GCODE files uploaded to be printed are *not* affected! This vulnerability exclusively affects GCODE Scripts to be executed on connection to the printer, print pause, resume etc, as described [in the documentation](https://docs.octoprint.org/en/master/features/gcode_scripts.html), to be found under Settings > GCODE Scripts and configurable only by users with the `ADMIN` permission. ### Patches The vulnerability has been patched in version 1.9.3. ### Workarounds OctoPrint administrators are strongly advised to thoroughly vet who has admin access to their installation and to not blindly configure arbitrary GCODE scripts found online or provided to them by third parties. ### Credits This vulnerability was discovered and responsibly disclosed to OctoPrint by tianxin Wu (Bearcat), Vulnerability Researcher at Numen Cyber Labs, Singapore.

CVE-2023-41047 Affected OctoPrint Versions

1 component(s)
Fixed Versions:
1.9.3
Product / Package Ecosystem Affected Versions Fixed Version
OctoPrint
pypi/OctoPrint
PyPI
< 1.9.3
1.9.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-fwfg-vprh-97ph
NVD — CVE-2023-41047 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-41047
Security Fix Commit FIX COMMIT
https://github.com/OctoPrint/OctoPrint/commit/d0072cff894509c77e243d6562245ad3079e17db
OctoPrint Source Repository REPOSITORY
https://github.com/OctoPrint/OctoPrint
OctoPrint Release RELEASE
https://github.com/OctoPrint/OctoPrint/releases/tag/1.9.3
OctoPrint Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/octoprint/PYSEC-2023-195.yaml

Frequently Asked Questions

What is CVE-2023-41047?
CVE-2023-41047 is a security vulnerability in OctoPrint involving OctoPrint vulnerable to Improper Neutralization of Special Elements Used in a Template Engine under CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine.
Which OctoPrint versions are affected?
Affected versions include releases prior to 1.9.3 across affected packages: OctoPrint.
What version fixes CVE-2023-41047?
Upgrading to 1.9.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is OctoPrint affected?
Yes, OctoPrint is affected in releases prior to 1.9.3. Upgrade your dependency to 1.9.3 or later.
What is the CVSS score of CVE-2023-41047?
CVE-2023-41047 has a CVSS v3.1 base score of 6.5 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2023-41047?
CVE-2023-41047 is classified under CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine (The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.).
How can I check PyPI dependencies for CVE-2023-41047?
Run the dependency tree command: 'pip show OctoPrint'. 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-fwfg-vprh-97ph",
  "modified" : "2024-10-07T16:46:03Z",
  "published" : "2023-10-10T21:21:12Z",
  "aliases" : [ "CVE-2023-41047" ],
  "summary" : "OctoPrint vulnerable to Improper Neutralization of Special Elements Used in a Template Engine",
  "details" : "### Impact\n\nOctoPrint versions up until and including 1.9.2 contain a vulnerability that allows malicious admins to configure a specially crafted [GCODE script](https://docs.octoprint.org/en/master/features/gcode_scripts.html) through the Settings that will allow code execution during rendering of that script.\n\nAn attacker might use this to extract data managed by OctoPrint, or manipulate data managed by OctoPrint, as well as execute arbitrary commands with the rights of the OctoPrint process on the server system.\n\nPlease note that GCODE files uploaded to be printed are *not* affected! This vulnerability exclusively affects GCODE Scripts to be executed on connection to the printer, print pause, resume etc, as described [in the documentation](https://docs.octoprint.org/en/master/features/gcode_scripts.html), to be found under Settings > GCODE Scripts and configurable only by users with the `ADMIN` permission.\n\n### Patches\n\nThe vulnerability has been patched in version 1.9.3.\n\n### Workarounds\n\nOctoPrint administrators are strongly advised to thoroughly vet who has admin access to their installation and to not blindly configure arbitrary GCODE scripts found online or provided to them by third parties.\n\n### Credits\n\nThis vulnerability was discovered and responsibly disclosed to OctoPrint by tianxin Wu (Bearcat), Vulnerability Researcher at Numen Cyber Labs, Singapore.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "OctoPrint"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.9.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-fwfg-vprh-97ph"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-41047"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OctoPrint/OctoPrint/commit/d0072cff894509c77e243d6562245ad3079e17db"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OctoPrint/OctoPrint"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OctoPrint/OctoPrint/releases/tag/1.9.3"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/octoprint/PYSEC-2023-195.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1336" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-10T21:21:12Z",
    "nvd_published_at" : "2023-10-09T16:15:10Z"
  }
}