The InfoCard module 1.0 for SimpleSAMLphp allows attackers to spoof XML messages by leveraging an incorrect check of return values in signature validation utilities.
github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp-module-infocard/CVE-2017-12874.yaml
github.com/simplesamlphp/simplesamlphp
github.com/simplesamlphp/simplesamlphp-module-infocard/commit/63b84cc837ea62bf87f4bf4af29b4420f49311a9
lists.debian.org/debian-lts-announce/2017/12/msg00007.html
nvd.nist.gov/vuln/detail/CVE-2017-12874
simplesamlphp.org/security/201612-03
www.debian.org/security/2018/dsa-4127