PT-2023-6690 · Bitrix+1 · Bitrix24+1

Cursered + 2 · Published 2023-11-01 · Updated 2025-12-01 · CVE-2023-1718

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Bitrix24 version 22.0.300

Description An improper file stream access issue exists in the /desktop app/file.ajax.php?action=uploadfile component of Bitrix24. This allows unauthenticated remote attackers to cause a denial-of-service condition by using a crafted tmp url. The issue is related to a loop with an inaccessible exit condition. The affected API endpoint is /desktop app/file.ajax.php with the action parameter set to uploadfile. The vulnerable parameter is tmp url.

Recommendations Bitrix24 version 22.0.300: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

BDU:2023-07460

CVE-2023-1718

Affected Products

Bitrix

Bitrix24

References · 16

• 🔥 https://github.com/jhonnybonny/Bitrix24DoS · Exploit
• 🔥 https://starlabs.sg/advisories/23/23-1718 · Exploit
• https://osv.dev/vulnerability/CVE-2023-1718 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-07460 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-1718 · Security Note
• https://vuldb.com/ru/?id.244184 · Note
• https://1c-bitrix.ru/vul/18880208 · Note
• https://t.me/cvenotify/60299 · Telegram Post
• https://t.me/apt_notes/971 · Telegram Post
• https://t.me/true_secator/7676 · Telegram Post
• https://t.me/cibsecurity/73304 · Telegram Post
• https://t.me/freedomf0x/20532 · Telegram Post
• https://twitter.com/CVEnew/status/1719644482935628240 · Twitter Post
• https://t.me/pentestbacklog/195 · Telegram Post
• https://t.me/poxek/3380 · Telegram Post