CVE-2021-3671
CVSS V2 Medium 4
CVSS V3 Medium 6.5
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.
Overview
- CVE ID
- CVE-2021-3671
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-10-12T18:15:08
- Last Modified Date
- 2023-02-24T17:39:38
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.13.12 | |
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 1 | OR | 4.14.0 | 4.14.8 |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2013080, | Broken Link Issue Tracking |
| https://bugzilla.samba.org/show_bug.cgi?id=14770, | Broken Link Issue Tracking |
| https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20221215-0002/ | |
| https://security.netapp.com/advisory/ntap-20230216-0008/ | |
| https://www.debian.org/security/2022/dsa-5287 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-3671 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3671 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:51:12 | Added to TrackCVE | |||
| 2022-12-05 12:15:56 | 2021-10-12T18:15Z | 2021-10-12T18:15:08 | CVE Published Date | updated |
| 2022-12-05 12:15:56 | 2022-11-29T22:11:59 | CVE Modified Date | updated | |
| 2022-12-05 12:15:56 | Analyzed | Vulnerability Status | updated | |
| 2022-12-05 12:16:00 | References | updated | ||
| 2022-12-15 20:12:51 | 2022-12-15T19:15:16 | CVE Modified Date | updated | |
| 2022-12-15 20:12:51 | Analyzed | Modified | Vulnerability Status | updated |
| 2022-12-15 20:12:51 | References | updated | ||
| 2022-12-19 04:24:58 | Modified | Undergoing Analysis | Vulnerability Status | updated |
| 2023-02-16 15:11:35 | 2023-02-16T14:15:15 | CVE Modified Date | updated | |
| 2023-02-16 15:11:36 | References | updated | ||
| 2023-02-24 19:12:41 | 2023-02-24T17:39:38 | CVE Modified Date | updated | |
| 2023-02-24 19:12:41 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |