CVE-2021-25832

moderate-risk
Published 2021-03-01

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.

Do I need to act?

~
7.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Onlyoffice

References (14)

Product https://github.com/ONLYOFFICE/DocumentServer
Product https://github.com/ONLYOFFICE/core
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/Binar...
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/Binar...
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/...
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/...
Exploit https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25832
Product https://github.com/ONLYOFFICE/DocumentServer
Product https://github.com/ONLYOFFICE/core
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/Binar...
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/Binar...
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/...
Vendor Advisory https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/...
Exploit https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25832
46
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 9/34 · Low
Exposure 5/34 · Minimal