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I. Basic Information for CVE-2023-1718
Vulnerability Information
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Vulnerability Title
Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted "tmp_url".
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Bitrix24 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bitrix24是美国Bitrix公司的一套企业社交平台。该平台包括在线通讯、日历管理和CRM（客户关系管理）等功能。 Bitrix24 22.0.300版本存在安全漏洞，该漏洞源于文件/file.ajax.php的文件流访问不正确，导致攻击者可以通过特制的tmpurl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
Bitrix24Bitrix24 0 ~ 22.0.300 -
II. Public POCs for CVE-2023-1718
#POC DescriptionSource LinkShenlong Link
1This Python script is designed to exploit a security vulnerability in Bitrix24, leading to a Denial of Service (DoS) attack. The vulnerability, identified as CVE-2023-1718, allows an attacker to disrupt the normal operation of a Bitrix24 instance.https://github.com/jhonnybonny/Bitrix24DoSPOC Details
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III. Intelligence Information for CVE-2023-1718
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IV. Related Vulnerabilities
Same product: Bitrix24
Same vendor: Bitrix24
Same weakness: CWE-835
V. Comments for CVE-2023-1718

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