CVE-2020-19001: Simiki Command Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-w873-xcqq-x922
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CVSS 9.8
CWE-77
Published
Advisory Summary

CVE-2020-19001 is a CRITICAL (CVSS 9.8) command injection vulnerability (CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')) affecting Simiki libraries in the PyPI ecosystem. The issue involves command injection in simiki. Remediation is available by upgrading affected packages to version 1.6.2.2.

CVE-2020-19001 at a Glance

CVE Identifier CVE-2020-19001
GHSA Identifier GHSA-w873-xcqq-x922
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Product Simiki
Package Ecosystem PyPI
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-2020-19001

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

simiki fixed: 1.6.2.2 
pip install simiki>=1.6.2.2
Verify Direct and Transitive Dependencies

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

pip show simiki

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2020-19001, inspect your installed packages using pip:

pip show simiki

Analyze the terminal output to locate any version of Simiki in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.6.2.2), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'), where the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. In Simiki, 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

Command Injection in Simiki v1.6.2.1 and prior allows remote attackers to execute arbitrary system commands via line 64 of the component 'simiki/blob/master/simiki/config.py'.

CVE-2020-19001 Affected Simiki Versions

1 component(s)
Fixed Versions:
1.6.2.2
Product / Package Ecosystem Affected Versions Fixed Version
simiki
pypi/simiki
PyPI
< 1.6.2.2
1.6.2.2

References

NVD — CVE-2020-19001 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-19001
Simiki Source Repository REPOSITORY
https://github.com/tankywoo/simiki/issues/123
Security Fix Commit FIX COMMIT
https://github.com/tankywoo/simiki/commit/45da0ab7c1e94b368cac22867e7ac9a42dbb9390
Simiki Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/simiki/PYSEC-2021-348.yaml
Simiki Source Repository REPOSITORY
https://github.com/tankywoo/simiki

Frequently Asked Questions

What is CVE-2020-19001?
CVE-2020-19001 is a security vulnerability in Simiki involving Command Injection in Simiki under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection').
Which Simiki versions are affected?
Affected versions include releases prior to 1.6.2.2 across affected packages: simiki.
What version fixes CVE-2020-19001?
Upgrading to 1.6.2.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is simiki affected?
Yes, simiki is affected in releases prior to 1.6.2.2. Upgrade your dependency to 1.6.2.2 or later.
What is the CVSS score of CVE-2020-19001?
CVE-2020-19001 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-2020-19001?
CVE-2020-19001 is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.).
How can I check PyPI dependencies for CVE-2020-19001?
Run the dependency tree command: 'pip show simiki'. 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-w873-xcqq-x922",
  "modified" : "2024-10-22T17:29:26Z",
  "published" : "2021-09-01T18:37:24Z",
  "aliases" : [ "CVE-2020-19001" ],
  "summary" : "Command Injection in Simiki",
  "details" : "Command Injection in Simiki v1.6.2.1 and prior allows remote attackers to execute arbitrary system commands via line 64 of the component 'simiki/blob/master/simiki/config.py'.",
  "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" : "PyPI",
      "name" : "simiki"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.2.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.6.2.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-19001"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tankywoo/simiki/issues/123"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tankywoo/simiki/commit/45da0ab7c1e94b368cac22867e7ac9a42dbb9390"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/simiki/PYSEC-2021-348.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/tankywoo/simiki"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-30T18:13:07Z",
    "nvd_published_at" : "2021-08-27T19:15:00Z"
  }
}