GHSA-rw54-6826-c8j5

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GHSA-rw54-6826-c8j5

Summary: yiisoft/yii2-authclient's Oauth2 PKCE implementation is vulnerable

Details: ### 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?_

References: https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-rw54-6826-c8j5, https://nvd.nist.gov/vuln/detail/CVE-2023-50714, https://github.com/yiisoft/yii2-authclient/commit/721ed974bc44137437b0cdc8454e137fff8db213, https://github.com/yiisoft/yii2-authclient, https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158, https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121, https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420