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CVE-2021-31826

Date: April 26, 2021

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.

Language: C++

Severity Score

Related Resources (10)

https://bugs.debian.org/987608
https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=5a47c3b9378f4c49392dd4d15189b70956f9f2ec
https://shibboleth.net/community/advisories/secadv_20210426.txt
https://www.debian.org/security/2021/dsa-4905
https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-31826
https://nvd.nist.gov/vuln/detail/CVE-2021-31826
https://issues.shibboleth.net/jira/browse/SSPCPP-927
https://security-tracker.debian.org/tracker/CVE-2021-31826
https://www.mend.io/vulnerability-database/CVE-2021-31826

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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