A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. A SimpleSAMLphp Service Provider using SAML 1.1 will regard as valid any unsigned SAML response containing more than one signed assertion, provided that the signature of at least one of the assertions is valid. Attributes contained in all the assertions received will be merged and the entityID of the first assertion received will be used, allowing an attacker to impersonate any user of any IdP given an assertion signed by the targeted IdP.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2018-02-02T15:00:00

Updated: 2024-08-05T21:13:48.156Z

Reserved: 2018-02-02T00:00:00

Link: CVE-2017-18122

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-02-02T15:29:00.283

Modified: 2024-11-21T03:19:23.663

Link: CVE-2017-18122

cve-icon Redhat

No data.