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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.
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https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-rw54-6826-c8j5 No Types Assigned
https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-rw54-6826-c8j5 Exploit, Third Party Advisory
New CVE Received by NIST12/22/2023 2:15:09 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
GitHub, Inc. AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Added
CWE
GitHub, Inc. CWE-347
Added
CWE
GitHub, Inc. CWE-918
Added
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 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.
Added
Reference
GitHub, Inc. https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth1.php#L158 [No types assigned]
Added
Reference
GitHub, Inc. https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OAuth2.php#L121 [No types assigned]
Added
Reference
GitHub, Inc. https://github.com/yiisoft/yii2-authclient/blob/0d1c3880f4d79e20aa1d77c012650b54e69695ff/src/OpenIdConnect.php#L420 [No types assigned]
Added
Reference
GitHub, Inc. https://github.com/yiisoft/yii2-authclient/commit/721ed974bc44137437b0cdc8454e137fff8db213 [No types assigned]
Added
Reference
GitHub, Inc. https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-rw54-6826-c8j5 [No types assigned]
Quick Info
CVE Dictionary Entry: CVE-2023-50714 NVD
Published Date: 12/22/2023 NVD
Last Modified: 01/08/2024
Source: GitHub, Inc.