Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.Referenceshttps://shibboleth.net/community/advisories/secadv_20210426.txthttps://issues.shibboleth.net/jira/browse/SSPCPP-927https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2echttps://bugs.debian.org/987608https://www.debian.org/security/2021/dsa-4905
