CVE-2023-50714

2023-12-2219:15:09

CWE-287

CWE-347

CWE-918

[email protected]

web.nvd.nist.gov

yii2

authclient

yii framework

extension

oauth2

pkce

cve-2023-50714

security vulnerability

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

8.6 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

27.1%

JSON

yii2-authclient is an extension that adds OpenID, OAuth, OAuth2 and OpenId Connect consumers for the Yii framework 2.0. In yii2-authclient prior to version 2.2.15, the Oauth2 PKCE implementation is vulnerable in 2 ways. First, the authCodeVerifier should be removed after usage (similar to authState). Second, there is a risk for a downgrade attack if PKCE is being relied on for CSRF protection. Version 2.2.15 contains a patch for the issue. No known workarounds are available.

Affected configurations

Vulners

NVD

Node

yiisoftyii2_authclientRange<2.2.15

CPENameOperatorVersion
yiiframework:yii2-authclientyiiframework yii2-authclientlt2.2.15

CPE	Name	Operator	Version
yiiframework:yii2-authclient	yiiframework yii2-authclient	lt	2.2.15

CNA Affected

[
  {
    "vendor": "yiisoft",
    "product": "yii2-authclient",
    "versions": [
      {
        "version": "< 2.2.15",
        "status": "affected"
      }
    ]
  }
]