Vulnerability Details : CVE-2021-31826
Potential exploit
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-31826
- cpe:2.3:a:shibboleth:service_provider:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31826
0.28%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 68 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31826
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-31826
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31826
-
https://www.debian.org/security/2021/dsa-4905
Debian -- Security Information -- DSA-4905-1 shibboleth-spThird Party Advisory
-
https://shibboleth.net/community/advisories/secadv_20210426.txt
Vendor Advisory
-
https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=5a47c3b9378f4c49392dd4d15189b70956f9f2ec
git.shibboleth.net Git - cpp-sp.git/commitMailing List;Vendor Advisory
-
https://issues.shibboleth.net/jira/browse/SSPCPP-927
[SSPCPP-927] Check for missing DataSealer during cookie recovery - Shibboleth JIRAExploit;Patch;Vendor Advisory
-
https://bugs.debian.org/987608
#987608 - shibboleth-sp: CVE-2021-31826: Session recovery feature contains a null pointer deference - Debian Bug report logsMailing List;Third Party Advisory
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