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CVE
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CVE-2021-3671Date: (C)2021-10-13   (M)2024-04-30


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 and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 6.5CVSS Score : 4.0
Exploit Score: 2.8Exploit Score: 8.0
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: SINGLE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
DSA-5287
https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html
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/04171147948d0a3636bc6374181926f0fb2ec83a
https://security.netapp.com/advisory/ntap-20221215-0002/
https://security.netapp.com/advisory/ntap-20230216-0008/

CPE    1
cpe:/a:samba:samba
CWE    1
CWE-476
OVAL    15
oval:org.secpod.oval:def:707761
oval:org.secpod.oval:def:86629
oval:org.secpod.oval:def:84887
oval:org.secpod.oval:def:86621
...

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