CVE-2022-28470: Marcador Code-execution Backdoor Vulnerability

CRITICAL
Advisory Identifier: GHSA-57qv-h9m7-jxfg
Share
CVSS 9.8
Published
Advisory Summary

CVE-2022-28470 is a CRITICAL (CVSS 9.8) code-execution backdoor vulnerability (General Security Weakness) affecting Marcador libraries in the PyPI ecosystem. The issue involves code-execution backdoor in marcador. Remediation is available by upgrading affected packages to version 0.14.

CVE-2022-28470 at a Glance

CVE Identifier CVE-2022-28470
GHSA Identifier GHSA-57qv-h9m7-jxfg
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Marcador
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-2022-28470

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

marcador fixed: 0.14 
pip install marcador>=0.14
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 marcador

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2022-28470, inspect your installed packages using pip:

pip show marcador

Analyze the terminal output to locate any version of Marcador in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.14), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Marcador, 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

marcador package in PyPI 0.1 through 0.13 included a code-execution backdoor.

CVE-2022-28470 Affected Marcador Versions

1 component(s)
Fixed Versions:
0.14
Product / Package Ecosystem Affected Versions Fixed Version
marcador
pypi/marcador
PyPI
< 0.14
0.14

References

NVD — CVE-2022-28470 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-28470
Marcador Source Repository REPOSITORY
https://github.com/joajfreitas/marcador/issues/5
Security Fix Commit FIX COMMIT
https://github.com/joajfreitas/marcador/commit/84d84549c6c6d765abc9243ac7e85d810f32d6e7
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-57qv-h9m7-jxfg
Marcador Source Repository REPOSITORY
https://github.com/joajfreitas/marcador
Marcador Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/marcador/PYSEC-2022-185.yaml
pypi.org/project/marcador WEB
https://pypi.org/project/marcador
pypi.doubanio.com/simple/request WEB
http://pypi.doubanio.com/simple/request

Frequently Asked Questions

What is CVE-2022-28470?
CVE-2022-28470 is a security vulnerability in Marcador involving Code-execution backdoor in marcador under General Security Weakness.
Which Marcador versions are affected?
Affected versions include releases prior to 0.14 across affected packages: marcador.
What version fixes CVE-2022-28470?
Upgrading to 0.14 (or the latest patched release for your respective branch) resolves the vulnerability.
Is marcador affected?
Yes, marcador is affected in releases prior to 0.14. Upgrade your dependency to 0.14 or later.
What is the CVSS score of CVE-2022-28470?
CVE-2022-28470 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-2022-28470?
CVE-2022-28470 is classified under General Security Weakness.
How can I check PyPI dependencies for CVE-2022-28470?
Run the dependency tree command: 'pip show marcador'. 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-57qv-h9m7-jxfg",
  "modified" : "2024-09-30T17:01:43Z",
  "published" : "2022-05-09T00:00:48Z",
  "aliases" : [ "CVE-2022-28470" ],
  "summary" : "Code-execution backdoor in marcador",
  "details" : "marcador package in PyPI 0.1 through 0.13 included a code-execution backdoor.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "marcador"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.14"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-28470"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/joajfreitas/marcador/issues/5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/joajfreitas/marcador/commit/84d84549c6c6d765abc9243ac7e85d810f32d6e7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-57qv-h9m7-jxfg"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/joajfreitas/marcador"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/marcador/PYSEC-2022-185.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://pypi.org/project/marcador"
  }, {
    "type" : "WEB",
    "url" : "http://pypi.doubanio.com/simple/request"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-24T21:32:34Z",
    "nvd_published_at" : "2022-05-08T20:15:00Z"
  }
}