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[email protected]CVE-2021-3671

HistoryOct 12, 2021 - 6:15 p.m.

CVE-2021-3671

2021-10-1218:15:08

CWE-476

[email protected]

web.nvd.nist.gov

261

cve-2021-3671

samba

kerberos server

nvd

security vulnerability

tgs-req

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

7.1 High

AI Score

Confidence

High

0.005 Low

EPSS

Percentile

77.1%

JSON

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.

Affected configurations

Vulners

NVD

Node

sambasambaRange≤4.13.12

sambasambaRange≤4.14.8

VendorProductVersionCPE
sambasamba*cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
sambasamba*cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
samba	samba	*	cpe:2.3:a:samba:samba::::::::
samba	samba	*	cpe:2.3:a:samba:samba::::::::

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "Samba",
    "versions": [
      {
        "version": "Fixed in samba 4.13.12, samba 4.14.8",
        "status": "affected"
      }
    ]
  }
]