CVE-2023-50708

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    CVE-2023-50708

    Published: 22 Dec 2023Last Modified: 12 Aug 2026

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

    Details: 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.

    References: 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, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50708.json, https://github.com/yiisoft/yii2-authclient/security/advisories/GHSA-w8vh-p74j-x9xp, https://nvd.nist.gov/vuln/detail/CVE-2023-50708, https://github.com/yiisoft/yii2-authclient/commit/dabddf2154ab7e7703740205a069202554089248

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a11cbb065a2424c25f9dc0d0df6852d605d869b2

    Affected versions

    2.2.14
    2.2.13
    2.2.12
    2.2.11
    2.2.10
    2.2.9
    2.2.8
    2.2.7
    2.2.6
    2.2.4
    2.2.3
    2.2.2
    2.2.1
    2.2.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-50708 | CVE-DB