UBUNTU-CVE-2018-7711

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    UBUNTU-CVE-2018-7711

    Published: 5 Mar 2018Last Modified: 24 Oct 2025
    Upstream:
    CVE-2018-7711

    Summary:

    Details: HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the signature validation utilities, allowing an attacker to get invalid signatures accepted as valid by forcing an error during validation. This occurs because of a dependency on PHP functionality that interprets a -1 error code as a true boolean value.

    References: https://ubuntu.com/security/CVE-2018-7711, https://simplesamlphp.org/security/201803-01, https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d, https://www.cve.org/CVERecord?id=CVE-2018-7711

    Affected packages

    Package

    Name: simplesamlphp

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.13.2-1

    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
    UBUNTU-CVE-2018-7711 | CVE-DB