CVE-2021-3199: Docs (ONLYOFFICE)
Vulnerabilità già sfruttata in attacchi reali, punteggio 9,8 su 10, in Docs (ONLYOFFICE). Sfruttabile da remoto, via rete, senza credenziali, senza che nessuno faccia nulla. Tipo: accesso a file fuori dalla cartella prevista (path traversal).
- Gravità
- 9,8 su 10 (critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Sfruttamento
- Sfruttata in attacchi reali (catalogo CISA KEV).
- Scadenza CISA
- Le agenzie federali USA devono correggerla entro il 11 ottobre 2026: un buon riferimento anche per voi.
- Tipo di difetto
- CWE-22: accesso a file fuori dalla cartella prevista (path traversal)
- Pubblicata
- 26 gennaio 2021
Descrizione originale
ONLYOFFICE Docs contains a path traversal vulnerability that can occur when JWT is used, via a /.. sequence in an image upload parameter and could allow for remote code execution.
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Fonti
- Scheda NVD
- github.com/ONLYOFFICE/DocumentServer/blob/903fe5ab7a275bd69c3c3346af2d21cf87ebeabf/CHANGELOG.md#563
- github.com/moehw/poc_exploits/tree/master/CVE-2021-3199/poc_uploadImageFile.py
- github.com/nola-milkin/poc_exploits/blob/master/CVE-2021-3199/poc_uploadImageFile.py
- github.com/ONLYOFFICE/DocumentServer/blob/903fe5ab7a275bd69c3c3346af2d21cf87ebeabf/CHANGELOG.md#563
- github.com/moehw/poc_exploits/tree/master/CVE-2021-3199/poc_uploadImageFile.py
- github.com/nola-milkin/poc_exploits/blob/master/CVE-2021-3199/poc_uploadImageFile.py