Improper input validation in Onlyoffice Document_server
CVE-2020-11536
An issue was discovered in ONLYOFFICE Document Server 5.5.0. An attacker can craft a malicious .docx file, and exploit the unzip function to rewrite a binary and remotely execute code on a victim's server.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.026 (83.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Onlyoffice Document_server — versions 5.5.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-11536?
- CVE-2020-11536 is a critical-severity vulnerability in Onlyoffice Document_server, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-04-15.
- How severe is CVE-2020-11536?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-11536 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.