GHSA-2mrj-435v-c2cr: Duplicate Advisory Denial of Service Vulnerability

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Advisory Summary

GHSA-2mrj-435v-c2cr is a MODERATE denial of service vulnerability (General Security Weakness) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves possible dos caused by malformed signature decoding in pure-python ecdsa. Remediation is available by upgrading affected packages to version 0.13.3.

GHSA-2mrj-435v-c2cr at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-2mrj-435v-c2cr
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-2mrj-435v-c2cr

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

ecdsa fixed: 0.13.3 
pip install ecdsa>=0.13.3
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 ecdsa

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-2mrj-435v-c2cr, inspect your installed packages using pip:

pip show ecdsa

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.13.3), your application is affected.

Note: The pip show ecdsa 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 Duplicate Advisory, 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

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-pwfw-mgfj-7g3g. This link is maintained to preserve external references.

GHSA-2mrj-435v-c2cr Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
0.13.3
Product / Package Ecosystem Affected Versions Fixed Version
ecdsa
pypi/ecdsa
PyPI
< 0.13.3
0.13.3

References

NVD — GHSA-2mrj-435v-c2cr NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-14853
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-2mrj-435v-c2cr
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-pwfw-mgfj-7g3g
Duplicate Advisory Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2019-177.yaml
Duplicate Advisory Release RELEASE
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
seclists.org/bugtraq/2019/dec/33 WEB
https://seclists.org/bugtraq/2019/Dec/33
Duplicate Advisory Security Information SECURITY
https://www.debian.org/security/2019/dsa-4588

Frequently Asked Questions

What is GHSA-2mrj-435v-c2cr?
GHSA-2mrj-435v-c2cr is a security vulnerability in Duplicate Advisory involving possible DoS caused by malformed signature decoding in Pure-Python ECDSA under General Security Weakness.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 0.13.3 across affected packages: ecdsa.
What version fixes GHSA-2mrj-435v-c2cr?
Upgrading to 0.13.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ecdsa affected?
Yes, ecdsa is affected in releases prior to 0.13.3. Upgrade your dependency to 0.13.3 or later.
What CWE is associated with GHSA-2mrj-435v-c2cr?
GHSA-2mrj-435v-c2cr is classified under General Security Weakness.
How can I check PyPI dependencies for GHSA-2mrj-435v-c2cr?
Run the dependency tree command: 'pip show ecdsa'. 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-2mrj-435v-c2cr",
  "modified" : "2024-09-20T16:46:32Z",
  "published" : "2019-12-02T18:15:31Z",
  "withdrawn" : "2020-06-16T20:15:24Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: possible DoS caused by malformed signature decoding in Pure-Python ECDSA",
  "details" : "## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-pwfw-mgfj-7g3g. This link is maintained to preserve external references.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "ecdsa"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.13.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-14853"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-2mrj-435v-c2cr"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-pwfw-mgfj-7g3g"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2019-177.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"
  }, {
    "type" : "WEB",
    "url" : "https://seclists.org/bugtraq/2019/Dec/33"
  }, {
    "type" : "WEB",
    "url" : "https://www.debian.org/security/2019/dsa-4588"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-12-02T01:15:50Z",
    "nvd_published_at" : null
  }
}