CVE-2021-31826: Null Pointer Dereference
First published: Mon Apr 26 2021(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/shibboleth-sp | 3.0.4+dfsg1-1+deb10u2 3.2.2+dfsg1-1 3.4.1+dfsg-2 | |
| debian/shibboleth-sp | <=3.0.4+dfsg1-1+deb10u1<=3.0.4+dfsg1-1<=3.0.2+dfsg1-1<=3.2.1+dfsg1-1 | 3.2.2+dfsg1-1 3.0.4+dfsg1-1+deb10u2 |
| Shibboleth Service Provider | >=3.0.0<3.2.2 |
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Reference Links
- https://shibboleth.net/community/advisories/secadv_20210426.txt
- https://issues.shibboleth.net/jira/browse/SSPCPP-927
- https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=5a47c3b9378f4c49392dd4d15189b70956f9f2ec
- https://security-tracker.debian.org/tracker/CVE-2021-31826
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987608
- https://bugs.debian.org/987608
- https://www.debian.org/security/2021/dsa-4905
Frequently Asked Questions
What is CVE-2021-31826?
CVE-2021-31826 refers to a vulnerability in Shibboleth Service Provider 3.x before 3.2.2 that allows for a NULL pointer dereference flaw involving the session recovery feature.
How severe is CVE-2021-31826?
CVE-2021-31826 has a severity rating of 7.5, which is considered high.
Which systems are affected by CVE-2021-31826?
Systems running Shibboleth Service Provider 3.x versions before 3.2.2 are affected by CVE-2021-31826.
How can I mitigate the vulnerability CVE-2021-31826?
To mitigate the vulnerability CVE-2021-31826, update your Shibboleth Service Provider to version 3.2.2 or later.
Where can I find more information about CVE-2021-31826?
You can find more information about CVE-2021-31826 in the following references: [Link 1](https://shibboleth.net/community/advisories/secadv_20210426.txt), [Link 2](https://issues.shibboleth.net/jira/browse/SSPCPP-927), [Link 3](https://git.shibboleth.net/view/?p=cpp-sp.git;a=commit;h=5a47c3b9378f4c49392dd4d15189b70956f9f2ec).
- collector/security-tracker-debian
- collector/debian-bugs
- alias/CVE-2021-31826
- collector/nvd-index
- package-manager/debian
- vendor/shibboleth
- canonical/shibboleth service provider
- version/shibboleth service provider/3.0.0