CVE-2023-26150: Asyncua Asyncua Improper Authentication Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2894-qcqf-g23g
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CVSS 7.5
CWE-287
Published
Advisory Summary

CVE-2023-26150 is a HIGH (CVSS 7.5) asyncua improper authentication vulnerability vulnerability (CWE-287: Improper Authentication) affecting Asyncua libraries in the PyPI ecosystem. The issue involves asyncua improper authentication vulnerability. Remediation is available by upgrading affected packages to version 0.9.96.

CVE-2023-26150 at a Glance

CVE Identifier CVE-2023-26150
GHSA Identifier GHSA-2894-qcqf-g23g
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-287: Improper Authentication
Affected Product Asyncua
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/A:N).

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 None (I:N)
Availability None (A:N)

How to Fix CVE-2023-26150

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

asyncua fixed: 0.9.96 
pip install asyncua>=0.9.96
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 asyncua

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2023-26150, inspect your installed packages using pip:

pip show asyncua

Analyze the terminal output to locate any version of Asyncua in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.96), your application is affected.

Note: The pip show asyncua 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 Asyncua, 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

Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. **Note:** This issue is a result of missing checks for services that require an active session.

CVE-2023-26150 Affected Asyncua Versions

1 component(s)
Fixed Versions:
0.9.96
Product / Package Ecosystem Affected Versions Fixed Version
asyncua
pypi/asyncua
PyPI
< 0.9.96
0.9.96

References

NVD — CVE-2023-26150 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-26150
Asyncua Source Repository REPOSITORY
https://github.com/FreeOpcUa/opcua-asyncio/issues/1014
Asyncua Source Repository REPOSITORY
https://github.com/FreeOpcUa/opcua-asyncio/pull/1015
Security Fix Commit FIX COMMIT
https://github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a
Security Fix Commit FIX COMMIT
https://github.com/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde513
Asyncua Source Repository REPOSITORY
https://gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121
Asyncua Source Repository REPOSITORY
https://github.com/FreeOpcUa/opcua-asyncio
Asyncua Release RELEASE
https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96
Asyncua Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/asyncua/PYSEC-2023-189.yaml
Asyncua Security Information SECURITY
https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435

Frequently Asked Questions

What is CVE-2023-26150?
CVE-2023-26150 is a security vulnerability in Asyncua involving asyncua Improper Authentication vulnerability under CWE-287: Improper Authentication.
Which Asyncua versions are affected?
Affected versions include releases prior to 0.9.96 across affected packages: asyncua.
What version fixes CVE-2023-26150?
Upgrading to 0.9.96 (or the latest patched release for your respective branch) resolves the vulnerability.
Is asyncua affected?
Yes, asyncua is affected in releases prior to 0.9.96. Upgrade your dependency to 0.9.96 or later.
What is the CVSS score of CVE-2023-26150?
CVE-2023-26150 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2023-26150?
CVE-2023-26150 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-2023-26150?
Run the dependency tree command: 'pip show asyncua'. 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-2894-qcqf-g23g",
  "modified" : "2023-10-04T19:34:34Z",
  "published" : "2023-10-03T06:30:26Z",
  "aliases" : [ "CVE-2023-26150" ],
  "summary" : "asyncua Improper Authentication vulnerability",
  "details" : "Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication.\n\n**Note:**\n\nThis issue is a result of missing checks for services that require an active session.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "asyncua"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.96"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-26150"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FreeOpcUa/opcua-asyncio/issues/1014"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FreeOpcUa/opcua-asyncio/pull/1015"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde513"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/FreeOpcUa/opcua-asyncio"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/asyncua/PYSEC-2023-189.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-04T14:13:24Z",
    "nvd_published_at" : "2023-10-03T05:15:49Z"
  }
}