CVE-2017-16853
Publication date 16 November 2017
Last updated 25 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| opensaml2 | ||
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Fixed 2.5.5-1ubuntu0.1
|
|
| 14.04 LTS trusty |
Fixed 2.5.3-2+deb8u2build0.14.04.1
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.1 · High
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |