CVE-2018-7644

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    CVE-2018-7644

    Published: 5 Mar 2018Last Modified: 8 Jul 2026

    Summary:

    Details: The XmlSecLibs library as used in the saml2 library in SimpleSAMLphp before 1.15.3 incorrectly verifies signatures on SAML assertions, allowing a remote attacker to construct a crafted SAML assertion on behalf of an Identity Provider that would pass as cryptographically valid, thereby allowing them to impersonate a user from that Identity Provider, aka a key confusion issue.

    References: https://simplesamlphp.org/security/201802-01

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -1cba48676420d7889ba8223d4f2ea1b9867c0184

    Affected versions

    v1.15.2
    v1.15.1
    v1.15.0
    v1.15.0-rc3
    v1.15.0-rc2
    v1.15.0-rc1

    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