CVE-2023-50708

CRITICAL EPSS 49.1%
Published Dec 22, 20232y ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Dec 22, 2023 2y ago
Last Modified Jun 17, 2026 1w ago

Description

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 Oauth1/2 `state` and OpenID Connect `nonce` is vulnerable for a `timing attack` since it is compared via regular string comparison (instead of `Yii::$app->getSecurity()->compareString()`). Version 2.2.15 contains a patch for the issue. No known workarounds are available.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
49.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-203

Affected Products 1

VendorProductVersionRange
yiiframeworkyii2-authclient* <2.2.15

References 5

  • github.com https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158
    Product
  • github.com https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121
    Product
  • github.com https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420
    Product
  • github.com https://github.com/yiisoft/yii2-authclient/commit/dabddf2154ab7e7703740205a069202554089248
    Issue TrackingPatch
  • github.com https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-w8vh-p74j-x9xp
    ExploitPatchThird Party Advisory

Remediation

  • github.com https://github.com/yiisoft/yii2-authclient/commit/dabddf2154ab7e7703740205a069202554089248
    Issue TrackingPatch
  • github.com https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-w8vh-p74j-x9xp
    ExploitPatchThird Party Advisory