---
title: "CVE-2017-16852\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2017-16852?format=md
keywords: index, follow
---

# CVE-2017-16852

Publication date 16 November 2017

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**8.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2017-16852?format=md#impact-score)

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## Description

shibsp/metadata/DynamicMetadataProvider.cpp in the Dynamic MetadataProvider
plugin in Shibboleth Service Provider 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 SSPCPP-763.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| shibboleth-sp2 | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 22.04 LTS jammy | Not in release |
| 21.10 impish | Not in release |
| 21.04 hirsute | Not in release |
| 20.10 groovy | Not in release |
| 20.04 LTS focal | Not in release |
| 19.10 eoan | Not in release |
| 19.04 disco | Not in release |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Fixed 2.6.0+dfsg1-4+deb9u1build0.17.10.1 |
| 17.04 zesty | Fixed 2.6.0+dfsg1-4+deb9u1build0.17.04.1 |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.1 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.1 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16852)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-16852)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-16852)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-16852)

### Other references

* <https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=b66cceb0e992c351ad5e2c665229ede82f261b16>
* <https://shibboleth.net/community/advisories/secadv_20171115.txt>
* <https://bugs.debian.org/881857>
* <https://www.cve.org/CVERecord?id=CVE-2017-16852>