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.
Metrics
Affected Vendors & Products
References
History
No history.
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
Vulnrichment
No data.
NVD
Status : Modified
Published: 2018-02-02T15:29:00.283
Modified: 2024-11-21T03:19:23.663
Link: CVE-2017-18122
Redhat
No data.