{"id":"GHSA-923w-2xv2-7pr8","aliases":["CVE-2018-7644"],"title":"SimpleSAMLphp Improper Verification of Cryptographic Signature","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"HIGH","description":"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issue.","severity":"high","score":7.5,"published":"2022-05-13T01:53:23.000Z","modified":"2024-04-25T21:26:45.191Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"simplesamlphp/saml2","sources":[{"name":"OSV · GHSA-923w-2xv2-7pr8","url":"https://osv.dev/vulnerability/GHSA-923w-2xv2-7pr8"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"1.10.5"}],"type":"ECOSYSTEM"}],"versions":["v0.1.0","v0.1.0-alpha","v0.3.0","v0.4.0","v0.4.1","v0.4.2","v0.5.0","v0.6.0","v0.6.1","v0.6.2","v0.6.3","v0.6.4","v0.7.0","v0.7.1","v0.8.0","v0.8.1","v1.0.0","v1.1.0","v1.10","v1.10.1","v1.10.2","v1.10.3","v1.10.4","v1.2.0","v1.3.0","v1.3.1","v1.3.2","v1.4.0","v1.5.0","v1.5.1","v1.5.2","v1.5.3","v1.5.4","v1.6.0","v1.6.1","v1.7.0","v1.7.1","v1.7.2","v1.8","v1.8.1","v1.8.2","v1.9","v1.9.1","v1.9.2"],"fixed":["1.10.5"]},{"ecosystem":"Packagist","name":"simplesamlphp/saml2","sources":[{"name":"OSV · GHSA-923w-2xv2-7pr8","url":"https://osv.dev/vulnerability/GHSA-923w-2xv2-7pr8"}],"ranges":[{"events":[{"introduced":"2.0"},{"fixed":"2.3.7"}],"type":"ECOSYSTEM"}],"versions":["v2.0.0","v2.0.1","v2.1","v2.2","v2.3","v2.3.1","v2.3.2","v2.3.3","v2.3.4","v2.3.5","v2.3.6"],"fixed":["2.3.7"]},{"ecosystem":"Packagist","name":"simplesamlphp/saml2","sources":[{"name":"OSV · GHSA-923w-2xv2-7pr8","url":"https://osv.dev/vulnerability/GHSA-923w-2xv2-7pr8"}],"ranges":[{"events":[{"introduced":"3.0"},{"fixed":"3.1.3"}],"type":"ECOSYSTEM"}],"versions":["v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.1.0","v3.1.1","v3.1.2"],"fixed":["3.1.3"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2018-7644","https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2018-7644.yaml","https://github.com/simplesamlphp/simplesamlphp","https://simplesamlphp.org/security/201802-01"],"sources":[{"name":"OSV","id":"GHSA-923w-2xv2-7pr8","modified":"2024-04-25T21:26:45.191964Z","url":"https://osv.dev/vulnerability/GHSA-923w-2xv2-7pr8"}],"assessments":[{"source":"OSV","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T15:50:37.681Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}