CVE-2021-31826

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.

• CWE-476

• https://bugs.debian.org/987608Mailing List, Third Party Advisory
• https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec
• https://issues.shibboleth.net/jira/browse/SSPCPP-927Exploit, Patch, Vendor Advisory
• https://shibboleth.net/community/advisories/secadv_20210426.txtVendor Advisory
• https://www.debian.org/security/2021/dsa-4905Third Party Advisory
• https://bugs.debian.org/987608Mailing List, Third Party Advisory
• https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec
• https://issues.shibboleth.net/jira/browse/SSPCPP-927Exploit, Patch, Vendor Advisory
• https://shibboleth.net/community/advisories/secadv_20210426.txtVendor Advisory
• https://www.debian.org/security/2021/dsa-4905Third Party Advisory

Published

Apr 27, 2021

Last Modified

Jun 17, 2026

Status

Modified

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