CVE-2021-31826
Shibboleth Service Provider Null Pointer Dereference Vulnerability
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.
INFO
Published Date :
April 27, 2021, 4:15 a.m.
Last Modified :
Nov. 21, 2024, 6:06 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-31826
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Upgrade the shibboleth-sp packages. For the stable distribution (buster), this problem has been fixed in version 3.0.4+dfsg1-1+deb10u2.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-31826.
| URL | Resource |
|---|---|
| https://bugs.debian.org/987608 | Mailing List Third Party Advisory |
| https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec | |
| https://issues.shibboleth.net/jira/browse/SSPCPP-927 | Exploit Patch Vendor Advisory |
| https://shibboleth.net/community/advisories/secadv_20210426.txt | Vendor Advisory |
| https://www.debian.org/security/2021/dsa-4905 | Third Party Advisory |
| https://bugs.debian.org/987608 | Mailing List Third Party Advisory |
| https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec | |
| https://issues.shibboleth.net/jira/browse/SSPCPP-927 | Exploit Patch Vendor Advisory |
| https://shibboleth.net/community/advisories/secadv_20210426.txt | Vendor Advisory |
| https://www.debian.org/security/2021/dsa-4905 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-31826 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-31826
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-31826 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-31826 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://bugs.debian.org/987608 Added Reference https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec Added Reference https://issues.shibboleth.net/jira/browse/SSPCPP-927 Added Reference https://shibboleth.net/community/advisories/secadv_20210426.txt Added Reference https://www.debian.org/security/2021/dsa-4905 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec [No types assigned] Removed Reference MITRE https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=5a47c3b9378f4c49392dd4d15189b70956f9f2ec -
Initial Analysis by [email protected]
May. 07, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://bugs.debian.org/987608 No Types Assigned https://bugs.debian.org/987608 Mailing List, Third Party Advisory Changed Reference Type https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=5a47c3b9378f4c49392dd4d15189b70956f9f2ec No Types Assigned https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=5a47c3b9378f4c49392dd4d15189b70956f9f2ec Mailing List, Vendor Advisory Changed Reference Type https://issues.shibboleth.net/jira/browse/SSPCPP-927 No Types Assigned https://issues.shibboleth.net/jira/browse/SSPCPP-927 Exploit, Patch, Vendor Advisory Changed Reference Type https://shibboleth.net/community/advisories/secadv_20210426.txt No Types Assigned https://shibboleth.net/community/advisories/secadv_20210426.txt Vendor Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4905 No Types Assigned https://www.debian.org/security/2021/dsa-4905 Third Party Advisory Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:a:shibboleth:service_provider:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.2.2 -
CVE Modified by [email protected]
Apr. 28, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4905 [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.48 }} -2.38%
score
0.79192
percentile