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CVE-2023-3347— Samba: smb2 packet signing is not enforced when "server signing = required" is set

CVSS 5.9 · Medium EPSS 0.42% · P62
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I. Basic Information for CVE-2023-3347

Vulnerability Information
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Vulnerability Title
Samba: smb2 packet signing is not enforced when "server signing = required" is set
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, such as a man-in-the-middle attack, by intercepting the network traffic and modifying the SMB2 messages between client and server, affecting the integrity of the data.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Samba 安全漏洞
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存在安全漏洞，该漏洞源于错误地执行了SMB2数据包签名。攻击者可利用该漏洞获取或修改敏感信息。
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

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 8 0:4.17.5-3.el8_8 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red HatRed Hat Enterprise Linux 8 0:4.17.5-3.el8_8 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red HatRed Hat Enterprise Linux 9 0:4.17.5-103.el9_2 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:4.17.5-103.el9_2 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Storage 3-cpe:/a:redhat:storage:3

II. Public POCs for CVE-2023-3347

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III. Intelligence Information for CVE-2023-3347

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Same Patch Batch · Red Hat · 2023-07-20 · 5 CVEs total

CVE-2023-349667.5 HIGHSamba: infinite loop in mdssvc rpc service for spotlight
CVE-2022-21275.9 MEDIUMSamba: out-of-bounds read in winbind auth_crap
CVE-2023-349685.3 MEDIUMSamba: spotlight server-side share path disclosure
CVE-2023-349675.3 MEDIUMSamba: type confusion in mdssvc rpc service for spotlight

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-347

V. Comments for CVE-2023-3347

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