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Status published
High
CVE-2023-1718
Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access
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".
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Lam Jun Rong & Li Jiantao of STAR Labs SG Pte. Ltd. (@starlabs_sg)
References
More from Bitrix24
View All →CVE-2023-1720
Bitrix24 Stored Cross-Site Scripting (XSS) via File Upload
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CVE-2023-1719
Bitrix24 Insecure Global Variable Extraction
High
7.5
CVE-2023-1717
Bitrix24 Cross-Site Scripting (XSS) via Client-side Prototype Pollution
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CVE-2023-1716
Bitrix24 Stored Cross-Site Scripting (XSS) via Improper Input Neutralization on Invoice Edit Page (2 of 2)
Critical
9
CVE-2023-1715
Bitrix24 Stored Cross-Site Scripting (XSS) via Improper Input Neutralization on Invoice Edit Page (1 of 2)
Critical
9
Affected Vendor
Bitrix24
View all reports →Affected Software
Bitrix24
Vulnerable Versions:
0
Timeline
Official Publish:
November 1st, 2023
Last Modified:
September 5th, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H