CVE-2021-3671
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
Se ha encontrado una desreferencia de puntero null en la forma en que el servidor kerberos de Samba manejaba el sname faltante en TGS-REQ (Ticket Granting Server - Request). Un usuario autenticado podría usar este fallo para bloquear el servidor samba
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-07-30 CVE Reserved
- 2021-10-12 CVE Published
- 2024-01-16 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2013080%2C | ||
| https://bugzilla.samba.org/show_bug.cgi?id=14770%2C | ||
| https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html | Mailing List |
|
| https://security.netapp.com/advisory/ntap-20221215-0002 | Third Party Advisory |
|
| https://security.netapp.com/advisory/ntap-20230216-0008 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a | 2023-11-07 |
| URL | Date | SRC |
|---|---|---|
| https://www.debian.org/security/2022/dsa-5287 | 2023-11-07 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | < 4.13.12 Search vendor "Samba" for product "Samba" and version " < 4.13.12" | - |
Affected
| ||||||
| Samba Search vendor "Samba" | Samba Search vendor "Samba" for product "Samba" | >= 4.14.0 < 4.14.8 Search vendor "Samba" for product "Samba" and version " >= 4.14.0 < 4.14.8" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Management Services For Element Software Search vendor "Netapp" for product "Management Services For Element Software" | - | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Management Services For Netapp Hci Search vendor "Netapp" for product "Management Services For Netapp Hci" | - | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Ontap Select Deploy Administration Utility Search vendor "Netapp" for product "Ontap Select Deploy Administration Utility" | - | - |
Affected
| ||||||