CVE-2017-16853

High

Description

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.

SeverityHigh

CVSS8.1

Exploit probability—

Product

Shibboleth Opensaml

PublishedNov 16, 2017

First seenNov 16, 2017

How to fix

Update

shibboleth opensaml2.6.1 or later

Vendor advisories

debian.org/security/2017/dsa-4039

Affected products

Product	Affected versions	Fixed in
shibboleth opensaml	v < 2.6.1	2.6.1
debian debian_linux	8.0, 9.0	—

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