Vulnerabilities in pkg:pypi/blazar-dashboard

PACKAGE
Advisory Identifier: GHSA-939m-4xpw-v34v
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Advisory Summary

CVE-2020-26943 is a MODERATE (CVSS 9.9) arbitrary code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Blazar dashboard libraries in the PyPI ecosystem. The issue involves arbitrary code execution in blazar-dashboard. Remediation is available by upgrading affected packages to version 1.3.1, 2.0.1, 3.0.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/blazar-dashboard

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/blazar-dashboard. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-939m-4xpw-v34v CVE-2020-26943 MODERATE Arbitrary Code Execution in blazar-dashboard

CVE-2020-26943 at a Glance

CVE Identifier CVE-2020-26943
GHSA Identifier GHSA-939m-4xpw-v34v
Severity MODERATE
CVSS v3.1 Base Score 9.9
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Blazar dashboard
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 9.9

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:C/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 Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2020-26943

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

blazar-dashboard fixed: 1.3.1 
pip install blazar-dashboard>=1.3.1
blazar-dashboard fixed: 2.0.1 
pip install blazar-dashboard>=2.0.1
blazar-dashboard fixed: 3.0.1 
pip install blazar-dashboard>=3.0.1
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 blazar-dashboard

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2020-26943, inspect your installed packages using pip:

pip show blazar-dashboard

Analyze the terminal output to locate any version of Blazar dashboard in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.1), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Blazar dashboard, 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 was discovered in OpenStack blazar-dashboard before 1.3.1, 2.0.0, and 3.0.0. A user allowed to access the Blazar dashboard in Horizon may trigger code execution on the Horizon host as the user the Horizon service runs under (because the Python eval function is used). This may result in Horizon host unauthorized access and further compromise of the Horizon service. All setups using the Horizon dashboard with the blazar-dashboard plugin are affected.

CVE-2020-26943 Affected Blazar dashboard Versions

3 component(s)
Fixed Versions:
1.3.12.0.13.0.1
Product / Package Ecosystem Affected Versions Fixed Version
blazar-dashboard
pypi/blazar-dashboard
PyPI
< 1.3.1
1.3.1
blazar-dashboard
pypi/blazar-dashboard
PyPI
≥ 2.0.0
< 2.0.1
All 1 versions
2.0.0
2.0.1
blazar-dashboard
pypi/blazar-dashboard
PyPI
≥ 3.0.0
< 3.0.1
All 1 versions
3.0.0
3.0.1

References

NVD — CVE-2020-26943 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26943
Blazar dashboard Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/blazar-dashboard/PYSEC-2020-225.yaml
launchpad.net/bugs/1895688 WEB
https://launchpad.net/bugs/1895688
review.opendev.org/755810 WEB
https://review.opendev.org/755810
review.opendev.org/755812 WEB
https://review.opendev.org/755812
review.opendev.org/755813 WEB
https://review.opendev.org/755813
review.opendev.org/755814 WEB
https://review.opendev.org/755814
review.opendev.org/756064 WEB
https://review.opendev.org/756064
Blazar dashboard Security Information SECURITY
https://security.openstack.org/ossa/OSSA-2020-007.html
Blazar dashboard Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/10/16/5

Frequently Asked Questions

What is CVE-2020-26943?
CVE-2020-26943 is a security vulnerability in Blazar dashboard involving Arbitrary Code Execution in blazar-dashboard under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Blazar dashboard versions are affected?
Affected versions include releases prior to 1.3.1, 2.0.1, 3.0.1 across affected packages: blazar-dashboard.
What version fixes CVE-2020-26943?
Upgrading to 1.3.1, 2.0.1, 3.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is blazar-dashboard affected?
Yes, blazar-dashboard is affected in releases prior to 1.3.1, 2.0.1, 3.0.1. Upgrade your dependency to 1.3.1, 2.0.1, 3.0.1 or later.
What is the CVSS score of CVE-2020-26943?
CVE-2020-26943 has a CVSS v3.1 base score of 9.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2020-26943?
CVE-2020-26943 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check PyPI dependencies for CVE-2020-26943?
Run the dependency tree command: 'pip show blazar-dashboard'. 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-939m-4xpw-v34v",
  "modified" : "2024-09-06T16:25:48Z",
  "published" : "2020-10-27T17:55:04Z",
  "aliases" : [ "CVE-2020-26943" ],
  "summary" : "Arbitrary Code Execution in blazar-dashboard",
  "details" : "An issue was discovered in OpenStack blazar-dashboard before 1.3.1, 2.0.0, and 3.0.0. A user allowed to access the Blazar dashboard in Horizon may trigger code execution on the Horizon host as the user the Horizon service runs under (because the Python eval function is used). This may result in Horizon host unauthorized access and further compromise of the Horizon service. All setups using the Horizon dashboard with the blazar-dashboard plugin are affected.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "blazar-dashboard"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "blazar-dashboard"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ],
    "versions" : [ "2.0.0" ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "blazar-dashboard"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.1"
      } ]
    } ],
    "versions" : [ "3.0.0" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-26943"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/blazar-dashboard/PYSEC-2020-225.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://launchpad.net/bugs/1895688"
  }, {
    "type" : "WEB",
    "url" : "https://review.opendev.org/755810"
  }, {
    "type" : "WEB",
    "url" : "https://review.opendev.org/755812"
  }, {
    "type" : "WEB",
    "url" : "https://review.opendev.org/755813"
  }, {
    "type" : "WEB",
    "url" : "https://review.opendev.org/755814"
  }, {
    "type" : "WEB",
    "url" : "https://review.opendev.org/756064"
  }, {
    "type" : "WEB",
    "url" : "https://security.openstack.org/ossa/OSSA-2020-007.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/10/16/5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-10-26T20:14:25Z",
    "nvd_published_at" : null
  }
}