Vulnerability Description
A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | < 4.13.12 |
| Debian | Debian Linux | 10.0 |
| Netapp | Management Services For Element Software | - |
| Netapp | Management Services For Netapp Hci | - |
| Netapp | Ontap Select Deploy Administration Utility | - |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C
- https://bugzilla.samba.org/show_bug.cgi?id=14770%2C
- https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec8PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00034.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20221215-0002/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230216-0008/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5287Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C
- https://bugzilla.samba.org/show_bug.cgi?id=14770%2C
- https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec8PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00034.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20221215-0002/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230216-0008/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5287Third Party Advisory
FAQ
What is CVE-2021-3671?
CVE-2021-3671 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba...
How severe is CVE-2021-3671?
CVE-2021-3671 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3671?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba, Debian Debian Linux, Netapp Management Services For Element Software, Netapp Management Services For Netapp Hci, Netapp Ontap Select Deploy Administration Utility.