PT-2022-11839 · Unknown · Onlyoffice

Iain Wallace · Published 2022-12-16 · Updated 2026-05-01 · CVE-2021-43444

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions ONLYOFFICE versions prior to 2021-11-08

Description Incorrect access control allows signed document download URLs to be forged because of a weak default URL signing key. Additionally, an unauthenticated WebSocket allows for document downloads, macro injection, and Server-Side Request Forgery (SSRF), which is a technique where an attacker forces a server to make requests to an unintended location. This is facilitated by a default JSON Web Token (JWT) key set to secret.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-43444

Affected Products

Onlyoffice

References · 12

• https://osv.dev/vulnerability/CVE-2021-43444 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43444 · Security Note
• https://onlyoffice.com · Vendor Advisory
• https://github.com/ONLYOFFICE/server · Note
• https://t.me/cvenotify/117382 · Telegram Post
• https://twitter.com/intigriti/status/2050139421735866554 · Twitter Post
• https://t.me/pentestingnews/31301 · Telegram Post
• https://labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution · Note
• https://t.me/thebugbountyhunter/6822 · Telegram Post
• https://t.me/cybersecuritytechnologies/7367 · Telegram Post
• https://t.me/cvenotify/43179 · Telegram Post
• https://t.me/cibsecurity/56843 · Telegram Post