Vulnerabilities > CVE-2021-25831 - Unspecified vulnerability in Onlyoffice Document Server

CVSS 9.8 - CRITICAL

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

network

low complexity

onlyoffice

critical

NVD

Published: 2021-03-01

Updated: 2024-11-21

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Onlyoffice Onlyoffice Document Server 4.0.0-9 Onlyoffice Document Server 4.0.1-34 Onlyoffice Document Server 4.0.2-4 Onlyoffice Document Server 4.0.3-3 Onlyoffice Document Server 4.1.2-37 Onlyoffice Document Server 4.1.4-3 Onlyoffice Document Server 4.1.5-1 Onlyoffice Document Server 4.1.6-3 Onlyoffice Document Server 4.1.8-1 Onlyoffice Document Server 4.2.0 Onlyoffice Document Server 4.2.1 Onlyoffice Document Server 4.2.3 Onlyoffice Document Server 4.2.4 Onlyoffice Document Server 4.2.5 Onlyoffice Document Server 4.2.7 Onlyoffice Document Server 4.2.8 Onlyoffice Document Server 4.2.9 Onlyoffice Document Server 4.2.10 Onlyoffice Document Server 4.2.11 Onlyoffice Document Server 4.3.0 Onlyoffice Document Server 4.3.1 Onlyoffice Document Server 4.3.2 Onlyoffice Document Server 4.3.3 Onlyoffice Document Server 4.3.4 Onlyoffice Document Server 4.3.5 Onlyoffice Document Server 4.3.6 Onlyoffice Document Server 4.4.1 Onlyoffice Document Server 4.4.2 Onlyoffice Document Server 4.4.3 Onlyoffice Document Server 5.0.3 Onlyoffice Document Server 5.0.4 Onlyoffice Document Server 5.0.5 Onlyoffice Document Server 5.0.6 Onlyoffice Document Server 5.0.7 Onlyoffice Document Server 5.1.0 Onlyoffice Document Server 5.1.1 Onlyoffice Document Server 5.1.2 Onlyoffice Document Server 5.1.3 Onlyoffice Document Server 5.1.4 Onlyoffice Document Server 5.1.5 Onlyoffice Document Server 5.2.0 Onlyoffice Document Server 5.2.2 Onlyoffice Document Server 5.2.3 Onlyoffice Document Server 5.2.4 Onlyoffice Document Server 5.2.6 Onlyoffice Document Server 5.2.7 Onlyoffice Document Server 5.2.8 Onlyoffice Document Server 5.3.0 Onlyoffice Document Server 5.3.1 Onlyoffice Document Server 5.3.2 Onlyoffice Document Server 5.3.4 Onlyoffice Document Server 5.4.0-2 Onlyoffice Document Server 5.4.1 Onlyoffice Document Server 5.4.2 Onlyoffice Document Server 5.5.0 Onlyoffice Document Server 5.5.1 Onlyoffice Document Server 5.5.3 Onlyoffice Document Server 5.6.0 Onlyoffice Document Server 5.6.1 Onlyoffice Document Server 5.6.2 Onlyoffice Document Server 5.6.3	61

Summary

Vulnerable Configurations

References