CVE-2020-7698: Gerapy Command Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-g57j-q48p-9vm2
Share
CVSS 9.8
CWE-74
Published
Advisory Summary

CVE-2020-7698 is a CRITICAL (CVSS 9.8) command injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Gerapy libraries in the PyPI ecosystem. The issue involves command injection in gerapy. Remediation is available by upgrading affected packages to version 0.9.3.

CVE-2020-7698 at a Glance

CVE Identifier CVE-2020-7698
GHSA Identifier GHSA-g57j-q48p-9vm2
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Product Gerapy
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-2020-7698

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

gerapy fixed: 0.9.3 
pip install gerapy>=0.9.3
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 gerapy

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2020-7698, inspect your installed packages using pip:

pip show gerapy

Analyze the terminal output to locate any version of Gerapy in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.3), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. In Gerapy, 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

This affects the package Gerapy from 0 and before 0.9.3. The input being passed to Popen, via the project_configure endpoint, isn’t being sanitized.

CVE-2020-7698 Affected Gerapy Versions

1 component(s)
Fixed Versions:
0.9.3
Product / Package Ecosystem Affected Versions Fixed Version
gerapy
pypi/gerapy
PyPI
< 0.9.3
0.9.3

References

NVD — CVE-2020-7698 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7698
Security Fix Commit FIX COMMIT
https://github.com/Gerapy/Gerapy/commit/e8446605eb2424717418eae199ec7aad573da2d2
Gerapy Source Repository REPOSITORY
https://github.com/Gerapy/Gerapy
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-g57j-q48p-9vm2
Gerapy Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/gerapy/PYSEC-2020-44.yaml
snyk.io/vuln/snyk-python-ge... WEB
https://snyk.io/vuln/SNYK-PYTHON-GERAPY-572470

Frequently Asked Questions

What is CVE-2020-7698?
CVE-2020-7698 is a security vulnerability in Gerapy involving Command injection in Gerapy under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Gerapy versions are affected?
Affected versions include releases prior to 0.9.3 across affected packages: gerapy.
What version fixes CVE-2020-7698?
Upgrading to 0.9.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is gerapy affected?
Yes, gerapy is affected in releases prior to 0.9.3. Upgrade your dependency to 0.9.3 or later.
What is the CVSS score of CVE-2020-7698?
CVE-2020-7698 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-2020-7698?
CVE-2020-7698 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check PyPI dependencies for CVE-2020-7698?
Run the dependency tree command: 'pip show gerapy'. 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-g57j-q48p-9vm2",
  "modified" : "2024-09-20T20:58:17Z",
  "published" : "2021-05-06T18:52:13Z",
  "aliases" : [ "CVE-2020-7698" ],
  "summary" : "Command injection in Gerapy",
  "details" : "This affects the package Gerapy from 0 and before 0.9.3. The input being passed to Popen, via the project_configure endpoint, isn’t being sanitized.",
  "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" : "gerapy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7698"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Gerapy/Gerapy/commit/e8446605eb2424717418eae199ec7aad573da2d2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Gerapy/Gerapy"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-g57j-q48p-9vm2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/gerapy/PYSEC-2020-44.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-PYTHON-GERAPY-572470"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-06T17:32:40Z",
    "nvd_published_at" : "2020-07-29T13:15:00Z"
  }
}