Critical severity · published Jan 23, 2023
CVE-2021-43445
ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control
9.8
CVSS
1.7%
EPSS
No
On KEV
Description
ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. An attacker can authenticate with the web socket service of the ONLYOFFICE document editor which is protected by JWT auth by using a default JWT signing key.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Server · Onlyoffice
through 7.0.0.49 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43445
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43445
Third Party Advisory
https://github.com/ONLYOFFICE/server
Mitigation
https://labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution/
Product
https://www.onlyoffice.com/
More from Server
8.1
CVE-2021-43449
ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Server-Side Request Forgery (SSRF)
7.5
CVE-2021-43447
ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control
7.5
CVE-2021-43444
ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control
6.1
CVE-2021-43446
ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Cross Site Scripting (XSS)
5.3
CVE-2021-43448
ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Improper Input Validation