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I. Basic Information for CVE-2023-42669
Vulnerability Information
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Vulnerability Title
Samba: "rpcecho" development server allows denial of service via sleep() call on ad dc
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements. This vulnerability stems from an RPC function that can be blocked indefinitely. The issue arises because the "rpcecho" service operates with only one worker in the main RPC task, allowing calls to the "rpcecho" server to be blocked for a specified time, causing service disruptions. This disruption is triggered by a "sleep()" call in the "dcesrv_echo_TestSleep()" function under specific conditions. Authenticated users or attackers can exploit this vulnerability to make calls to the "rpcecho" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as "rpcecho" runs in the main RPC task.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
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rpcecho开发服务器存在安全漏洞。允许攻击者通过调用AD DC上的sleep（）造成拒绝服务（DOS）。
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 0:4.18.6-2.el8_9 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red HatRed Hat Enterprise Linux 8 0:4.18.6-2.el8_9 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support 0:4.15.5-13.el8_6 ~ * cpe:/a:redhat:rhel_eus:8.6::appstream
Red HatRed Hat Enterprise Linux 8.8 Extended Update Support 0:4.17.5-4.el8_8 ~ * cpe:/a:redhat:rhel_eus:8.8::appstream
Red HatRed Hat Enterprise Linux 9 0:4.18.6-101.el9_3 ~ * cpe:/o:redhat:enterprise_linux:9::baseos
Red HatRed Hat Enterprise Linux 9 0:4.18.6-101.el9_3 ~ * cpe:/o:redhat:enterprise_linux:9::baseos
Red HatRed Hat Enterprise Linux 9.0 Extended Update Support 0:4.15.5-111.el9_0 ~ * cpe:/a:redhat:rhel_eus:9.0::appstream
Red HatRed Hat Enterprise Linux 9.2 Extended Update Support 0:4.17.5-104.el9_2 ~ * cpe:/a:redhat:rhel_eus:9.2::crb
Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 8 0:4.15.5-13.el8_6 ~ * cpe:/a:redhat:rhel_eus:8.6::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-2023-42669
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III. Intelligence Information for CVE-2023-42669
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IV. Related Vulnerabilities
Same weakness: CWE-400
V. Comments for CVE-2023-42669

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