Showing 2 vulnerabilities on this page for yii2-authclient

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yiisoft vulnerability results
VulnerabilityTitle and contextCVSSEPSSPoCsSignalsSTIX action

The Oauth2 PKCE implementation is vulnerable

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.

CVSS6.8v3.1EPSS0.492%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

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

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.

CWE-203Dec 22, 2023
CVSS6.1v3.1EPSS0.716%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX