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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.014 (71.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Shibboleth Opensaml
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- www.debian.org/security/2017/dsa-4039 (vendor-advisory, Third Party Advisory, Issue Tracking)
- bugs.debian.org/881856 (Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/101898 (VDB Entry, Third Party Advisory, vdb-entry)
- git.shibboleth.net/view/
- shibboleth.net/community/advisories/secadv_20171115.txt (Issue Tracking, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2017/11/msg00024.html (mailing-list)
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.