by Kastro
Paper/Archive/CVE-2023-1720

CVE-2023-1720

Bitrix24 Bitrix24 — Bitrix24 Stored Cross-Site Scripting (XSS) via File Upload

EPSS 0.9%public exploitCVSS 9.6
critical.is priorityof 100
50
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 58.2.582 × 2011.6Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

Lack of mime type response header in Bitrix24 22.0.300 allows authenticated remote attackers to 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 uploading a crafted HTML file through /desktop_app/file.ajax.php?action=uploadfile.

Affected

ProductAffectedFixed inSource
Bitrix24≤ 22.0.300–CNA

Scores by source

STAR_Labs (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

writeupstarlabs.sg/advisories/23/23-1720