Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2023-1718— Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access

CVSS 7.5 · High EPSS 49.67% · P98
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2023-1718

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

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
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2023-1718

请登录查看更多情报信息。

Same Patch Batch · Bitrix24 · 2023-11-01 · 8 CVEs total

CVE-2023-17209.6 CRITICALBitrix24 Stored Cross-Site Scripting (XSS) via File Upload
CVE-2023-17179.6 CRITICALBitrix24 Cross-Site Scripting (XSS) via Client-side Prototype Pollution
CVE-2023-17169.0 CRITICALBitrix24 Stored Cross-Site Scripting (XSS) via Improper Input Neutralization on Invoice Ed
CVE-2023-17159.0 CRITICALBitrix24 Stored Cross-Site Scripting (XSS) via Improper Input Neutralization on Invoice Ed
CVE-2023-17148.8 HIGHBitrix24 Remote Command Execution (RCE) via Unsafe Variable Extraction
CVE-2023-17138.8 HIGHBitrix24 Remote Command Execution (RCE) via Insecure Temporary File Creation
CVE-2023-17197.5 HIGHBitrix24 Insecure Global Variable Extraction

IV. Related Vulnerabilities

Same product: Bitrix24
Same vendor: Bitrix24
Same weakness: CWE-835

V. Comments for CVE-2023-1718

No comments yet

Leave a comment