CVE-2021-25830
First published: Mon Mar 01 2021(Updated: )
A file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.2.0.236-v5.6.4.13. An attacker must request the conversion of the crafted file from DOCT into DOCX format. Using the chain of two other bugs related to improper string handling, an attacker can achieve remote code execution on DocumentServer.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ONLYOFFICE Document Server | >=4.2.0.236<=5.6.4.13 |
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Reference Links
- https://github.com/ONLYOFFICE/DocumentServer
- https://github.com/ONLYOFFICE/core
- https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L1918
- https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L241
- https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/PPTXFormat/Logic/UniFill.cpp#L343
- https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25830
- collector/nvd-index
- agent/references
- agent/author
- agent/severity
- agent/type
- agent/event
- agent/description
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- agent/last-modified-date
- collector/mitre-cve
- source/MITRE
- vendor/onlyoffice
- canonical/onlyoffice document server
- version/onlyoffice document server/4.2.0.236
- version/onlyoffice document server/5.6.4.13