GHSA-7p79-6x2v-5h88: Sanic Server Crash If Running Python Vulnerability

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Advisory Summary

GHSA-7p79-6x2v-5h88 is a HIGH server crash if running python vulnerability (General Security Weakness) affecting Sanic libraries in the PyPI ecosystem. The issue involves server crash if running python 3.10 w/ sanic 20.12. Remediation is available by upgrading affected packages to version 20.12.6.

GHSA-7p79-6x2v-5h88 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-7p79-6x2v-5h88
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Sanic
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-7p79-6x2v-5h88

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

sanic fixed: 20.12.6 
pip install sanic>=20.12.6
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 sanic

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-7p79-6x2v-5h88, inspect your installed packages using pip:

pip show sanic

Analyze the terminal output to locate any version of Sanic in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 20.12.6), your application is affected.

Note: The pip show sanic 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 Sanic, 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

**!!! ONLY APPLIES TO VERSIONS PRIOR TO Sanic v20.12 WHEN USING Python 3.10 !!!** Sanic v20.12 officially supports Python versions 3.6, 3.7, 3.8, and 3.9. However, if you accidentally run it with version 3.10 (**which is not supported by Sanic 20.12**), your server is prone to crashing on an incoming web request. ### Impact Anyone running Sanic server between 0.1.7 and 20.12 **using Python 3.10**. ### Patches [Sanic v20.12.6](https://github.com/sanic-org/sanic/releases/tag/v20.12.6) ### Workarounds Use a supported version of Python (v3.6 - v3.9) ### References > In [asyncio](https://docs.python.org/3/library/asyncio.html#module-asyncio), the explicit passing of a loop argument has been deprecated and will be removed in version 3.10 for the following: ... [asyncio.Event](https://docs.python.org/3/library/asyncio-sync.html#asyncio.Event) [Python 3.8 Release Notes](https://docs.python.org/3/whatsnew/3.8.html#deprecated) ### For more information If you have any questions or comments about this advisory: * Open an issue in [the community forums](https://community.sanicframework.org/) * Ping us on [the Discord server](https://discord.gg/FARQzAEMAA)

GHSA-7p79-6x2v-5h88 Affected Sanic Versions

1 component(s)
Fixed Versions:
20.12.6
Product / Package Ecosystem Affected Versions Fixed Version
sanic
pypi/sanic
PyPI
≥ 0.1.7
< 20.12.6
20.12.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/sanic-org/sanic/security/advisories/GHSA-7p79-6x2v-5h88
Sanic Source Repository REPOSITORY
https://github.com/sanic-org/sanic
Sanic Release RELEASE
https://github.com/sanic-org/sanic/releases/tag/v20.12.6

Frequently Asked Questions

What is GHSA-7p79-6x2v-5h88?
GHSA-7p79-6x2v-5h88 is a security vulnerability in Sanic involving Server crash if running Python 3.10 w/ Sanic 20.12 under General Security Weakness.
Which Sanic versions are affected?
Affected versions include releases prior to 20.12.6 across affected packages: sanic.
What version fixes GHSA-7p79-6x2v-5h88?
Upgrading to 20.12.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is sanic affected?
Yes, sanic is affected in releases prior to 20.12.6. Upgrade your dependency to 20.12.6 or later.
What CWE is associated with GHSA-7p79-6x2v-5h88?
GHSA-7p79-6x2v-5h88 is classified under General Security Weakness.
How can I check PyPI dependencies for GHSA-7p79-6x2v-5h88?
Run the dependency tree command: 'pip show sanic'. 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-7p79-6x2v-5h88",
  "modified" : "2022-02-25T14:54:31Z",
  "published" : "2022-02-16T22:57:57Z",
  "aliases" : [ ],
  "summary" : "Server crash if running Python 3.10 w/ Sanic 20.12",
  "details" : "**!!! ONLY APPLIES TO VERSIONS PRIOR TO Sanic v20.12 WHEN USING Python 3.10 !!!**\n\nSanic v20.12 officially supports Python versions 3.6, 3.7, 3.8, and 3.9. However, if you accidentally run it with version 3.10 (**which is not supported by Sanic 20.12**), your server is prone to crashing on an incoming web request.\n\n### Impact\nAnyone running Sanic server between 0.1.7 and 20.12 **using Python 3.10**.\n\n### Patches\n[Sanic v20.12.6](https://github.com/sanic-org/sanic/releases/tag/v20.12.6)\n\n### Workarounds\nUse a supported version of Python (v3.6 - v3.9)\n\n### References\n> In [asyncio](https://docs.python.org/3/library/asyncio.html#module-asyncio), the explicit passing of a loop argument has been deprecated and will be removed in version 3.10 for the following: ... [asyncio.Event](https://docs.python.org/3/library/asyncio-sync.html#asyncio.Event)\n\n[Python 3.8 Release Notes](https://docs.python.org/3/whatsnew/3.8.html#deprecated)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [the community forums](https://community.sanicframework.org/)\n* Ping us on [the Discord server](https://discord.gg/FARQzAEMAA)\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "sanic"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.1.7"
      }, {
        "fixed" : "20.12.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/sanic-org/sanic/security/advisories/GHSA-7p79-6x2v-5h88"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sanic-org/sanic"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sanic-org/sanic/releases/tag/v20.12.6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-02-16T22:57:57Z",
    "nvd_published_at" : null
  }
}