CVE-2018-7644

HIGH

SimpleSAMLphp < 1.15.3 and saml2 < 1.10.5 - Improper Verification of Cryptographic Signature in XmlSecLibs

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_confirm
https://simplesamlphp.org/security/201802-01

Scores

CVSS v3 7.5
EPSS 0.0126
EPSS Percentile 65.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-347
Status published
Products (2)
simplesamlphp/saml2 0 - 1.10.5Packagist
simplesamlphp/simplesamlphp < 1.15.3
Published Mar 05, 2018
Tracked Since Feb 18, 2026