CVE-2023-50714: Yiisoft/yii2 authclient Yiisoft/yii2-authclient's Oauth2 PKCE Implementation Is Vulnerability

MODERATE
Advisory Identifier: GHSA-rw54-6826-c8j5
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CVSS 6.8
CWE-287 CWE-347
Published
Advisory Summary

CVE-2023-50714 is a MODERATE (CVSS 6.8) yiisoft/yii2-authclient's oauth2 pkce implementation is vulnerability (CWE-287: Improper Authentication) affecting Yiisoft/yii2 authclient libraries in the Packagist ecosystem. The issue involves yiisoft/yii2-authclient's oauth2 pkce implementation is vulnerable. Remediation is available by upgrading affected packages to version 2.2.15.

CVE-2023-50714 at a Glance

CVE Identifier CVE-2023-50714
GHSA Identifier GHSA-rw54-6826-c8j5
Severity MODERATE
CVSS v3.1 Base Score 6.8
CWE Classification CWE-287: Improper Authentication
Affected Product Yiisoft/yii2 authclient
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.8

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:R/S:U/C:H/I:H/A:N).

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

How to Fix CVE-2023-50714

To remediate this vulnerability, upgrade all affected Yiisoft/yii2 authclient dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

yiisoft/yii2-authclient fixed: 2.2.15 
Upgrade yiisoft/yii2-authclient to 2.2.15
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for yiisoft/yii2-authclient

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-50714, inspect your project dependencies for Yiisoft/yii2 authclient:

inspect dependencies for yiisoft/yii2-authclient

Analyze the terminal output to locate any version of Yiisoft/yii2 authclient in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.15), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

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 Yiisoft/yii2 authclient, 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

### Impact _What kind of vulnerability is it? Who is impacted?_ Original Report: > The Oauth2 PKCE implementation is vulnerable in 2 ways: > 1. The `authCodeVerifier` should be removed after usage (similar to 'authState') > 2. There is a risk for a "downgrade attack" if PKCE is being relied on for CSRF protection. ### Patches _Has the problem been patched? What versions should users upgrade to?_ 2.2.15 ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ not known yet. ### References _Are there any links users can visit to find out more?_

CVE-2023-50714 Affected Yiisoft/yii2 authclient Versions

1 component(s)
Fixed Versions:
2.2.15
Product / Package Ecosystem Affected Versions Fixed Version
yiisoft/yii2-authclient
 Packagist
< 2.2.15
2.2.15

References

GitHub Advisory / Wiki ADVISORY
https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-rw54-6826-c8j5
NVD — CVE-2023-50714 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-50714
Security Fix Commit FIX COMMIT
https://github.com/yiisoft/yii2-authclient/commit/721ed974bc44137437b0cdc8454e137fff8db213
Yiisoft/yii2 authclient Source Repository REPOSITORY
https://github.com/yiisoft/yii2-authclient
Yiisoft/yii2 authclient Source Repository REPOSITORY
https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158
Yiisoft/yii2 authclient Source Repository REPOSITORY
https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121
Yiisoft/yii2 authclient Source Repository REPOSITORY
https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420

Frequently Asked Questions

What is CVE-2023-50714?
CVE-2023-50714 is a security vulnerability in Yiisoft/yii2 authclient involving yiisoft/yii2-authclient's Oauth2 PKCE implementation is vulnerable under CWE-287: Improper Authentication.
Which Yiisoft/yii2 authclient versions are affected?
Affected versions include releases prior to 2.2.15 across affected packages: yiisoft/yii2-authclient.
What version fixes CVE-2023-50714?
Upgrading to 2.2.15 (or the latest patched release for your respective branch) resolves the vulnerability.
Is yiisoft/yii2-authclient affected?
Yes, yiisoft/yii2-authclient is affected in releases prior to 2.2.15. Upgrade your dependency to 2.2.15 or later.
What is the CVSS score of CVE-2023-50714?
CVE-2023-50714 has a CVSS v3.1 base score of 6.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2023-50714?
CVE-2023-50714 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 Packagist dependencies for CVE-2023-50714?
Run the dependency tree command: 'inspect dependencies for yiisoft/yii2-authclient'. 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-rw54-6826-c8j5",
  "modified" : "2023-12-22T22:24:09Z",
  "published" : "2023-12-18T19:34:20Z",
  "aliases" : [ "CVE-2023-50714" ],
  "summary" : "yiisoft/yii2-authclient's Oauth2 PKCE implementation is vulnerable",
  "details" : "### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nOriginal Report:\n\n> The Oauth2 PKCE implementation is vulnerable in 2 ways:\n> 1. The `authCodeVerifier` should be removed after usage (similar to 'authState')\n> 2. There is a risk for a \"downgrade attack\" if PKCE is being relied on for CSRF protection.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\n2.2.15\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nnot known yet.\n\n### References\n_Are there any links users can visit to find out more?_\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "yiisoft/yii2-authclient"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.2.15"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-rw54-6826-c8j5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-50714"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/yiisoft/yii2-authclient/commit/721ed974bc44137437b0cdc8454e137fff8db213"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/yiisoft/yii2-authclient"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287", "CWE-347" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-12-18T19:34:20Z",
    "nvd_published_at" : "2023-12-22T19:15:09Z"
  }
}