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CVE-2019-3870

Quick assessment

Affected
The Samba Project 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Samba团队的一套可使UNIX系列的操作系统与微软Windows操作系统的SMB/CIFS网络协议做连结的自由软件。该软件支持共享打印机、互相传输资料文件等。 Samba中存在安全漏洞，该漏洞源于程序将private/目录下的文件创建成为全局可写入。攻击者可利用该漏洞提升权限。

AI Predicted 7.8 Difficulty: Easy EPSS 0.55% · P45
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I. Basic Information for CVE-2019-3870

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Samba from version (including) 4.9 to versions before 4.9.6 and 4.10.2. During the creation of a new Samba AD DC, files are created in a private subdirectory of the install location. This directory is typically mode 0700, that is owner (root) only access. However in some upgraded installations it will have other permissions, such as 0755, because this was the default before Samba 4.8. Within this directory, files are created with mode 0666, which is world-writable, including a sample krb5.conf, and the list of DNS names and servicePrincipalName values to update.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Samba 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samba是Samba团队的一套可使UNIX系列的操作系统与微软Windows操作系统的SMB/CIFS网络协议做连结的自由软件。该软件支持共享打印机、互相传输资料文件等。 Samba中存在安全漏洞，该漏洞源于程序将private/目录下的文件创建成为全局可写入。攻击者可利用该漏洞提升权限。
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
The Samba Project samba 4.9.6 -

II. Public POCs for CVE-2019-3870

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III. Intelligence Information for CVE-2019-3870

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Vendor Advisories for CVE-2019-3870 (2)

Mailing List Discussions for CVE-2019-3870 (2)

Other References for CVE-2019-3870 (3)

IV. Related Vulnerabilities

Same product: samba
Same vendor: The Samba Project
Same weakness: CWE-276