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CVE-2021-25831

CRITICAL

9.8

Description

A file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. An attacker must request the conversion of the crafted file from PPTT into PPTX format. Using the chain of two other bugs related to improper string handling, a remote attacker can obtain remote code execution on DocumentServer.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/1/2021

Derniere modification11/21/2024

Sourcenvd

Observations honeypot0

Produits affectes

onlyoffice:document_server

References

https://github.com/ONLYOFFICE/DocumentServer(cve@mitre.org)

https://github.com/ONLYOFFICE/core(cve@mitre.org)

https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L1918(cve@mitre.org)

https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L241(cve@mitre.org)

https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/PPTXFormat/Logic/Fills/BlipFill.cpp#L328(cve@mitre.org)

https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25831(cve@mitre.org)

https://github.com/ONLYOFFICE/DocumentServer(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/ONLYOFFICE/core(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L1918(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L241(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/PPTXFormat/Logic/Fills/BlipFill.cpp#L328(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25831(af854a3a-2127-422b-91ae-364da2661108)

Correlations IOC

Aucune correlation enregistree

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