VulnerabilityModified
CVE-2021-31826
The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.
HIGH 7.5EPSS 2.00%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.00% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- shibboleth/service provider
- Source
- cve@mitre.org
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.