Provide references for CVE-2021-28963.
Where can I find more information about CVE-2021-28963?
References are available at: https://bugs.debian.org/985405, https://shibboleth.net/community/advisories/secadv_20210317.txt, https://issues.shibboleth.net/jira/browse/SSPCPP-922, https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=d1dbebfadc1bdb824fea63843c4c38fa69e54379, https://www.debian.org/security/2021/dsa-4872.