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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | opensaml2 | 2.6.0-4+deb9u1 | DSA-4039-1 |
| Debian 8 | opensaml2 | 2.5.3-2+deb8u2 | DSA-4039-1 |
| Debian 7 | opensaml2 | 2.4.3-4+deb7u2 | DLA-1178-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | opensaml2 | 2.5.5-1ubuntu0.1 | — |
| Ubuntu 14.04 LTS | opensaml2 | 2.5.3-2+deb8u2build0.14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | opensaml | 2.5.5-3.3.1 | SUSE-SU-2017:3234-1 |
| SLES 12 SP2 | opensaml | 2.5.5-3.3.1 | SUSE-SU-2017:3234-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | opensaml | 2.5.5-3.3.1 | SUSE-SU-2017:3234-1 |
| SLES for SAP 12 SP2 | opensaml | 2.5.5-3.3.1 | SUSE-SU-2017:3234-1 |
Advisories 3
- DSA-4039-1 opensaml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1178-1 opensaml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:3234-1 Security update for opensaml SUSE / openSUSE Security Updates · Feb 4, 2026
References
- DSA-4039 vendor-advisory
- https://bugs.debian.org/881856
- 101898 vdb-entry
- https://git.shibboleth.net/view/?p=cpp-opensaml.git%3Ba=commit%3Bh=6182b0acf2df670e75423c2ed7afe6950ef11c9d
- https://shibboleth.net/community/advisories/secadv_20171115.txt
- [debian-lts-announce] 20171118 [SECURITY] [DLA 1178-1] opensaml2 security update mailing-list