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CVE-2023-50708

Date: December 22, 2023

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.

Language: PHP

Severity Score

Related Resources (8)

https://github.com/yiisoft/yii2-authclient
https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121
https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420
https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-w8vh-p74j-x9xp
https://github.com/yiisoft/yii2-authclient/commit/dabddf2154ab7e7703740205a069202554089248
https://nvd.nist.gov/vuln/detail/CVE-2023-50708
https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158
https://www.mend.io/vulnerability-database/CVE-2023-50708

Severity Score

Weakness Type (CWE)

Observable Discrepancy

CWE-203

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

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