CVE-2021-25833
Last modified
CVE-2021-25833 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A 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. EPSS estimates a 43.53% chance of exploitation in the next 30 days.
Description
A 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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Onlyoffice | Document Server | >= 4.2.0.71, <= 5.6.0.21 |
References
- https://github.com/ONLYOFFICE/DocumentServerProduct, Vendor Advisory
- https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25833Exploit, Third Party Advisory
- https://github.com/ONLYOFFICE/DocumentServerProduct, Vendor Advisory
- https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25833Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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