CVE-2020-19003: Gateone Verification Check Bypass Vulnerability

MODERATE
Advisory Identifier: GHSA-q6j2-g8qf-wvf7
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CVSS 5.3
CWE-290
Published
Advisory Summary

CVE-2020-19003 is a MODERATE (CVSS 5.3) verification check bypass vulnerability (CWE-290: Authentication Bypass by Spoofing) affecting Gateone libraries in the PyPI ecosystem. The issue involves verification check bypass in gate one. Remediation is available in the latest vendor maintenance releases.

CVE-2020-19003 at a Glance

CVE Identifier CVE-2020-19003
GHSA Identifier GHSA-q6j2-g8qf-wvf7
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-290: Authentication Bypass by Spoofing
Affected Product Gateone
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:N/I:L/A:N).

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 None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2020-19003

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

gateone fixed: Latest secure release 
pip install gateone>=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: 

pip show gateone

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2020-19003, inspect your installed packages using pip:

pip show gateone

Analyze the terminal output to locate any version of Gateone 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: The pip show gateone command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-290: Authentication Bypass by Spoofing, where this attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. In Gateone, 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

An issue in Gate One 1.2.0 allows attackers to bypass to the verification check done by the origins list and connect to Gate One instances used by hosts not on the origins list.

CVE-2020-19003 Affected Gateone Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
gateone
pypi/gateone
PyPI
≤ 1.2.0

References

NVD — CVE-2020-19003 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-19003
Gateone Source Repository REPOSITORY
https://github.com/liftoff/GateOne/issues/728
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-q6j2-g8qf-wvf7
Gateone Source Repository REPOSITORY
https://github.com/liftoff/GateOne
Gateone Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/gateone/PYSEC-2021-423.yaml

Frequently Asked Questions

What is CVE-2020-19003?
CVE-2020-19003 is a security vulnerability in Gateone involving Verification check bypass in Gate One under CWE-290: Authentication Bypass by Spoofing.
Which Gateone versions are affected?
Affected versions include releases prior to current release patches across affected packages: gateone.
What version fixes CVE-2020-19003?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is gateone affected?
Yes, gateone 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-2020-19003?
CVE-2020-19003 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2020-19003?
CVE-2020-19003 is classified under CWE-290: Authentication Bypass by Spoofing (This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.).
How can I check PyPI dependencies for CVE-2020-19003?
Run the dependency tree command: 'pip show gateone'. 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-q6j2-g8qf-wvf7",
  "modified" : "2024-09-20T21:02:36Z",
  "published" : "2021-10-12T22:34:28Z",
  "aliases" : [ "CVE-2020-19003" ],
  "summary" : "Verification check bypass in Gate One",
  "details" : "An issue in Gate One 1.2.0 allows attackers to bypass to the verification check done by the origins list and connect to Gate One instances used by hosts not on the origins list.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "gateone"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-19003"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/liftoff/GateOne/issues/728"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-q6j2-g8qf-wvf7"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/liftoff/GateOne"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/gateone/PYSEC-2021-423.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-290" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-10-07T13:57:49Z",
    "nvd_published_at" : "2021-10-06T13:15:00Z"
  }
}