CVE-2022-1930: Eth account Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-v65g-f3cj-fjp4
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CVSS 5.9
CWE-1333 CWE-697
Published
Advisory Summary

CVE-2022-1930 is a MODERATE (CVSS 5.9) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Eth account libraries in the PyPI ecosystem. The issue involves regular expression denial of service in eth-account. Remediation is available by upgrading affected packages to version 0.5.9.

CVE-2022-1930 at a Glance

CVE Identifier CVE-2022-1930
GHSA Identifier GHSA-v65g-f3cj-fjp4
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Eth account
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2022-1930

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

eth-account fixed: 0.5.9 
pip install eth-account>=0.5.9
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 eth-account

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2022-1930, inspect your installed packages using pip:

pip show eth-account

Analyze the terminal output to locate any version of Eth account in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.9), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. In Eth account, 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 exponential ReDoS (Regular Expression Denial of Service) can be triggered in the eth-account PyPI package, when an attacker is able to supply arbitrary input to the encode_structured_data method

CVE-2022-1930 Affected Eth account Versions

1 component(s)
Fixed Versions:
0.5.9
Product / Package Ecosystem Affected Versions Fixed Version
eth-account
pypi/eth-account
PyPI
< 0.5.9
0.5.9

References

NVD — CVE-2022-1930 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-1930
Security Fix Commit FIX COMMIT
https://github.com/ethereum/eth-account/commit/70f89be700df0d5f08ef696252c88741f8414060
Eth account Source Repository REPOSITORY
https://github.com/ethereum/eth-account
research.jfrog.com/vulnerabilities/eth... WEB
https://research.jfrog.com/vulnerabilities/eth-account-redos-xray-248681

Frequently Asked Questions

What is CVE-2022-1930?
CVE-2022-1930 is a security vulnerability in Eth account involving Regular expression denial of service in eth-account under CWE-1333: Inefficient Regular Expression Complexity.
Which Eth account versions are affected?
Affected versions include releases prior to 0.5.9 across affected packages: eth-account.
What version fixes CVE-2022-1930?
Upgrading to 0.5.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is eth-account affected?
Yes, eth-account is affected in releases prior to 0.5.9. Upgrade your dependency to 0.5.9 or later.
What is the CVSS score of CVE-2022-1930?
CVE-2022-1930 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2022-1930?
CVE-2022-1930 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check PyPI dependencies for CVE-2022-1930?
Run the dependency tree command: 'pip show eth-account'. 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-v65g-f3cj-fjp4",
  "modified" : "2022-08-30T20:20:59Z",
  "published" : "2022-08-23T00:00:13Z",
  "aliases" : [ "CVE-2022-1930" ],
  "summary" : "Regular expression denial of service in eth-account",
  "details" : "An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the eth-account PyPI package, when an attacker is able to supply arbitrary input to the encode_structured_data method",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "eth-account"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-1930"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ethereum/eth-account/commit/70f89be700df0d5f08ef696252c88741f8414060"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ethereum/eth-account"
  }, {
    "type" : "WEB",
    "url" : "https://research.jfrog.com/vulnerabilities/eth-account-redos-xray-248681"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333", "CWE-697" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-08-30T20:20:59Z",
    "nvd_published_at" : "2022-08-22T19:15:00Z"
  }
}