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CVE-2021-3671
A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server -…
Medium6.5EPSS 2.1%
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.1% · top 18% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Samba
- affected Fixed in samba 4.13.12, samba 4.14.8
References (7)
- https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C (opens in a new tab)x_transferred
- https://bugzilla.samba.org/show_bug.cgi?id=14770%2C (opens in a new tab)x_transferred
- https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a (opens in a new tab)x_transferred
- DSA-5287 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20221126 [SECURITY] [DLA 3206-1] heimdal security update (opens in a new tab)mailing-listx_transferred
- https://security.netapp.com/advisory/ntap-20221215-0002/ (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20230216-0008/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-3671)Record last updated .