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CVE-2021-3671

Quick assessment

Affected
n/a Samba
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Samba是用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 Samba存在代码问题漏洞，该漏洞源于在Samba Kerberos服务器处理TGS-REQ (Ticket Granting server - Request)中丢失sname的方式中存在空指针引用。经过身份验证的用户可以使用此漏洞使amba服务器崩溃。

AI Predicted 5.9 Difficulty: Easy EPSS 2.18% · P82

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-3671

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Samba 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samba是用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 Samba存在代码问题漏洞，该漏洞源于在Samba Kerberos服务器处理TGS-REQ (Ticket Granting server - Request)中丢失sname的方式中存在空指针引用。经过身份验证的用户可以使用此漏洞使amba服务器崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Samba Fixed in samba 4.13.12, samba 4.14.8 -

II. Public POCs for CVE-2021-3671

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-3671

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Patches & Fixes for CVE-2021-3671 (1)

Vendor Advisories for CVE-2021-3671 (4)

Mailing List Discussions for CVE-2021-3671 (1)

Other References for CVE-2021-3671 (1)

Same Patch Batch · n/a · 2021-10-12 · 23 CVEs total

CVE-2021-29644 8.1 HIGH JP1/IT Desktop Management 2 输入验证错误漏洞
CVE-2021-29645 7.0 HIGH JP1/IT Desktop Management 2 安全漏洞
CVE-2021-27003 Netapp Clustered Data ONTAP 安全漏洞
CVE-2020-22673 gpac MP4Box安全漏洞
CVE-2020-22675 GPAC 缓冲区错误漏洞
CVE-2020-22674 gpac 代码问题漏洞
CVE-2020-22677 GPAC 缓冲区错误漏洞
CVE-2020-22679 gpac MP4Box安全漏洞
CVE-2020-22678 GPAC 缓冲区错误漏洞
CVE-2021-42325 Froxlor SQL注入漏洞
CVE-2021-42326 Redmine 信息泄露漏洞
CVE-2020-28145 WUZHI CMS 安全漏洞
CVE-2021-40618 Open Solutions For Education openSIS SQL注入漏洞
CVE-2021-40292 DzzOffice 跨站脚本漏洞
CVE-2021-37734 Aruba Instant 路径遍历漏洞
CVE-2021-37735 Aruba Instant 格式化字符串错误漏洞
CVE-2021-37732 Aruba Instant 操作系统命令注入漏洞
CVE-2021-37727 Aruba Instant 操作系统命令注入漏洞
CVE-2021-37730 Aruba Instant 操作系统命令注入漏洞
CVE-2021-37726 Aruba Instant 缓冲区错误漏洞

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Samba
Same vendor: n/a
Same weakness: CWE-476

V. Comments for CVE-2021-3671

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