CVE-2021-31826

HIGH

Shibboleth Service Provider 3.0.0-3.2.1 - Denial of Service via Session Recovery Cookie

Title source: llm
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Exploit, Patch, Vendor Advisory x_refsource_misc
https://issues.shibboleth.net/jira/browse/SSPCPP-927
Mailing List, Third Party Advisory x_refsource_misc
https://bugs.debian.org/987608
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4905

Scores

CVSS v3 7.5
EPSS 0.0200
EPSS Percentile 78.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (1)
shibboleth/service_provider 3.0.0 - 3.2.2
Published Apr 27, 2021
Tracked Since Feb 18, 2026