CVE-2018-7711

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    CVE-2018-7711

    Published: 5 Mar 2018Last Modified: 8 Jul 2026

    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://lists.debian.org/debian-lts-announce/2018/03/msg00017.html, https://simplesamlphp.org/security/201803-01, https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- a8d493c6eef80b623f3dd77ef04c7cb71468f951
    Fixed -93fef13dea9c46dc238eb59e414d3ae76559d8c4

    Affected versions

    v1.10.5
    v1.10.4
    v1.10.3
    v1.10.2
    v1.10.1
    v1.10

    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