NULL pointer dereference in Shibboleth Service Provider
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (79.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
Weakness classification (CWE)
References
- shibboleth.net/community/advisories/secadv_20210426.txt (Vendor Advisory)
- issues.shibboleth.net/jira/browse/SSPCPP-927 (Exploit, Patch, Vendor Advisory)
- git.shibboleth.net/view/
- bugs.debian.org/987608 (Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4905 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31826?
- CVE-2021-31826 is a high-severity vulnerability in Shibboleth Service Provider, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-04-27.
- How severe is CVE-2021-31826?
- High severity. CVSS v3 base score is 7.5 out of 10.