CVE-2019-11881

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    CVE-2019-11881

    Published: 10 Jun 2019Last Modified: 7 Aug 2026

    Summary:

    Details: A vulnerability exists in Rancher before 2.2.4 in the login component, where the errorMsg parameter can be tampered to display arbitrary content, filtering tags but not special characters or symbols. There's no other limitation of the message, allowing malicious users to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a "This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading" message.

    References: https://github.com/rancher/rancher/blob/v2.2.4/pkg/auth/providers/saml/saml_client.go#L282, https://github.com/MauroEldritch/VanCleef, https://github.com/rancher/rancher/issues/20216, https://github.com/rancher/rancher/commit/e59adbc7565251919d84d6e353421104be8da06e

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 444497330ac72112fb2fc0546bbee39b7f919f3e
    Fixed -None

    Affected versions

    2.1.4

    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