CVE-2021-25832: Buffer Overflow
First published: Mon Mar 01 2021(Updated: )
A heap buffer overflow vulnerability inside of BMP image processing was found at [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v6.0.0. Using this vulnerability, an attacker is able to gain remote code executions on DocumentServer.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ONLYOFFICE | >=4.0.0-9<=6.0.0 |
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Reference Links
- https://github.com/ONLYOFFICE/DocumentServer
- https://github.com/ONLYOFFICE/core
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L424
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L428
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L354
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L358
- https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25832
Frequently Asked Questions
What is the severity of CVE-2021-25832?
The severity of CVE-2021-25832 is considered critical due to its potential for remote code execution.
How do I fix CVE-2021-25832?
To fix CVE-2021-25832, upgrade ONLYOFFICE DocumentServer to version 6.0.1 or later.
What systems are affected by CVE-2021-25832?
CVE-2021-25832 affects ONLYOFFICE DocumentServer versions from 4.0.0-9 to 6.0.0.
What type of vulnerability is CVE-2021-25832?
CVE-2021-25832 is a heap buffer overflow vulnerability found in BMP image processing.
Can an attacker exploit CVE-2021-25832 remotely?
Yes, an attacker can exploit CVE-2021-25832 remotely to execute arbitrary code on the affected server.
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- version/onlyoffice/4.0.0-9
- version/onlyoffice/6.0.0