CVE-2021-25833
critical · 9.8A file extension handling issue was found in [server] module of ONLYOFFICE DocumentServer v4.2.0.71-v5.6.0.21. The file extension is controlled by an attacker through the request data and leads to arbitrary file overwriting. Using this vulnerability, a remote attacker can obtain remote code execution on DocumentServer.
9.8
CVSS
43.5%
EPSS (exploit prob.)
99th
EPSS percentile
2021-03-01
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-22
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| onlyoffice | document_server | >= 4.2.0.71, <= 5.6.0.21 |
Check a specific version with /api/v1/cve/match.
References
- https://github.com/ONLYOFFICE/DocumentServer
- https://github.com/ONLYOFFICE/server
- https://github.com/ONLYOFFICE/server/blob/v5.6.0.21/DocService/sources/converterservice.js#L200
- https://github.com/ONLYOFFICE/server/blob/v5.6.0.21/FileConverter/sources/converter.js#L283
- https://github.com/ONLYOFFICE/server/blob/v5.6.0.21/FileConverter/sources/converter.js#L593
- https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25833
- https://github.com/ONLYOFFICE/DocumentServer
- https://github.com/ONLYOFFICE/server
- https://github.com/ONLYOFFICE/server/blob/v5.6.0.21/DocService/sources/converterservice.js#L200
- https://github.com/ONLYOFFICE/server/blob/v5.6.0.21/FileConverter/sources/converter.js#L283
- https://github.com/ONLYOFFICE/server/blob/v5.6.0.21/FileConverter/sources/converter.js#L593
- https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25833
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2021-25833