Paper/Archive/CVE-2021-3199

CVE-2021-3199

ONLYOFFICE Docs — ONLYOFFICE Docs Server Path Traversal Vulnerability

KEV · due 11 Oct EPSS 30%public exploit SSVC act CVSS 9.8

CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4 In CISA KEV+3030.0 EPSS percentile 98.2.982 × 2019.6 Exploit: SSVC active+1010.0 SSVC exploitation: active+1010.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refgithub.com/ONLYOFFICE/DocumentServer/blob/903fe5ab7a275bd69c3c3346af2d21cf87ebeabf/CHANGELOG.md#563 refgithub.com/nola-milkin/poc_exploits/blob/master/CVE-2021-3199/poc_uploadImageFile.py refgithub.com/moehw/poc_exploits/tree/master/CVE-2021-3199/poc_uploadImageFile.py refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3199 kevcisa.gov/known-exploited-vulnerabilities-catalog