GHSA-w8vh-p74j-x9xp yii2-authclient vulnerable to possible timing attack on string comparison in OAuth1, OAuth2 and OpenID Connect implementation

• Packagist yiisoft/yii2-authclient: < 2.2.15 → fixed in 2.2.15

Impact _What kind of vulnerability is it? Who is impacted?_ Original Report: > The Oauth1/2 "state" and OpenID Connect "nonce" is vulnerable for a "timing attack" since it's compared via regular string > comparison (instead of `Yii::$app->getSecurity()->compareString()`). Affected Code: 1. OAuth 1 "state" https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158 3. OAuth 2 "state" https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121 4. OpenID Connect "nonce" https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420 Patches _Has the problem been patched? What versions should users upgrade to?_ TBD: Replace strcmp with `Yii::$app->getSecurity()->compareString()`). Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ not as far as I see. References _Are there any links users can visit to find out more?_