CVE-2022-4722: Rdiffweb Authentication Bypass Vulnerability

HIGH
Advisory Identifier: GHSA-wf33-6x33-wcf9
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CVSS 7.2
CWE-287 CWE-305
Published
Advisory Summary

CVE-2022-4722 is a HIGH (CVSS 7.2) authentication bypass vulnerability (CWE-287: Improper Authentication) affecting Rdiffweb libraries in the PyPI ecosystem. The issue involves rdiffweb vulnerable to authentication bypass by primary weakness. Remediation is available by upgrading affected packages to version 2.5.5.

CVE-2022-4722 at a Glance

CVE Identifier CVE-2022-4722
GHSA Identifier GHSA-wf33-6x33-wcf9
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-287: Improper Authentication
Affected Product Rdiffweb
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.2

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
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-2022-4722

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

rdiffweb fixed: 2.5.5 
pip install rdiffweb>=2.5.5
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 rdiffweb

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2022-4722, inspect your installed packages using pip:

pip show rdiffweb

Analyze the terminal output to locate any version of Rdiffweb in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.5.5), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. In Rdiffweb, 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

In rdiffweb prior to 2.5.5, the username field is not unique to users. This allows exploitation of primary key logic by creating the same name with different combinations & may allow unauthorized access.

CVE-2022-4722 Affected Rdiffweb Versions

1 component(s)
Fixed Versions:
2.5.5
Product / Package Ecosystem Affected Versions Fixed Version
rdiffweb
pypi/rdiffweb
PyPI
< 2.5.5
2.5.5

References

NVD — CVE-2022-4722 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-4722
Security Fix Commit FIX COMMIT
https://github.com/ikus060/rdiffweb/commit/d1aaa96b665a39fba9e98d6054a9de511ba0a837
Rdiffweb Source Repository REPOSITORY
https://github.com/ikus060/rdiffweb
Rdiffweb Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/rdiffweb/PYSEC-2022-43008.yaml
huntr.dev/bounties/c62126dc-d... WEB
https://huntr.dev/bounties/c62126dc-d9a6-4d3e-988d-967031876c58

Frequently Asked Questions

What is CVE-2022-4722?
CVE-2022-4722 is a security vulnerability in Rdiffweb involving rdiffweb vulnerable to Authentication Bypass by Primary Weakness under CWE-287: Improper Authentication.
Which Rdiffweb versions are affected?
Affected versions include releases prior to 2.5.5 across affected packages: rdiffweb.
What version fixes CVE-2022-4722?
Upgrading to 2.5.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is rdiffweb affected?
Yes, rdiffweb is affected in releases prior to 2.5.5. Upgrade your dependency to 2.5.5 or later.
What is the CVSS score of CVE-2022-4722?
CVE-2022-4722 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-4722?
CVE-2022-4722 is classified under CWE-287: Improper Authentication (When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.).
How can I check PyPI dependencies for CVE-2022-4722?
Run the dependency tree command: 'pip show rdiffweb'. 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-wf33-6x33-wcf9",
  "modified" : "2024-10-25T21:41:19Z",
  "published" : "2022-12-27T15:30:19Z",
  "aliases" : [ "CVE-2022-4722" ],
  "summary" : "rdiffweb vulnerable to Authentication Bypass by Primary Weakness",
  "details" : "In rdiffweb prior to 2.5.5, the username field is not unique to users. This allows exploitation of primary key logic by creating the same name with different combinations & may allow unauthorized access.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "rdiffweb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.5.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-4722"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ikus060/rdiffweb/commit/d1aaa96b665a39fba9e98d6054a9de511ba0a837"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ikus060/rdiffweb"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/rdiffweb/PYSEC-2022-43008.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/c62126dc-d9a6-4d3e-988d-967031876c58"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287", "CWE-305" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-30T18:01:28Z",
    "nvd_published_at" : "2022-12-27T15:15:00Z"
  }
}