XPath Injection in Onlyoffice Document Server
CVE-2020-11535
An issue was discovered in ONLYOFFICE Document Server 5.5.0. An attacker can craft a malicious .docx file, and exploit XML injection to enter an attacker-controlled parameter into the x2t binary, to rewrite this binary and/or libxcb.so.1, and execute code on a victim's server.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.023 (82.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Onlyoffice Document Server — versions 5.5.0
Weakness classification (CWE)
References
- github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md (Third Party Advisory, Release Notes)
- gist.github.com/andrewaeva/beb92d3d2f1c5672dbda5050e323f6a0 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-11535?
- CVE-2020-11535 is a critical-severity vulnerability in Onlyoffice Document Server, classified under XML Injection (Blind XPath Injection). CVSS score: 9.8/10. Published 2020-04-15.
- How severe is CVE-2020-11535?
- Critical severity. CVSS v3 base score is 9.8 out of 10.