Vulnerability in Shibboleth Opensaml

CVE-2017-16853

The DynamicMetadataProvider class in saml/saml2/metadata/impl/DynamicMetadataProvider.cpp in OpenSAML-C in OpenSAML before 2.6.1 fails to properly configure itself with the MetadataFilter plugins and does not perform critical security checks such as signature verification, enforcement of validity periods, and other checks specific to deployments, aka CPPOST-105.

EPSS: 0.014 (69.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-16853?
CVE-2017-16853 is a high-severity vulnerability in Shibboleth Opensaml, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.1/10. Published 2017-11-16.
How severe is CVE-2017-16853?
High severity. CVSS v3 base score is 8.1 out of 10.