CVE-2021-3199
Registro da vulnerabilidade com dados oficiais do NIST NVD, CISA KEV e FIRST EPSS.
Descrição
Directory traversal with remote code execution can occur in /upload in ONLYOFFICE Document Server before 5.6.3, when JWT is used, via a /.. sequence in an image upload parameter.
- CVSS 3.x
- 9.8 CRITICAL
- Publicada
- 26/01/2021
- Atualizada
- 09/10/2026
- Status NVD
- Analyzed
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Fraqueza: CWE-22
Exploração
- No catálogo CISA KEV
- Sim, desde 08/10/2026
- Usada por ransomware
- Não confirmado
- Prazo CISA
- 11/10/2026
- EPSS (FIRST)
- 19.4%
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.
Referências
Links publicados no registro oficial
- https://github.com/ONLYOFFICE/DocumentServer/blob/903fe5ab7a275bd69c3c3346af2d21cf87ebeabf/CHANGELOG.md#563
- https://github.com/moehw/poc_exploits/tree/master/CVE-2021-3199/poc_uploadImageFile.py
- https://github.com/nola-milkin/poc_exploits/blob/master/CVE-2021-3199/poc_uploadImageFile.py
- https://github.com/ONLYOFFICE/DocumentServer/blob/903fe5ab7a275bd69c3c3346af2d21cf87ebeabf/CHANGELOG.md#563
- https://github.com/moehw/poc_exploits/tree/master/CVE-2021-3199/poc_uploadImageFile.py
- https://github.com/nola-milkin/poc_exploits/blob/master/CVE-2021-3199/poc_uploadImageFile.py
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3199
Alguns navegadores bloqueiam sites oficiais abertos a partir da pré-visualização; copie o endereço para abrir em outra aba: https://nvd.nist.gov/vuln/detail/CVE-2021-3199