CVE-2020-11535 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://gist.github.com/andrewaeva/beb92d3d2f1c5672dbda5050e323f6a0 https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md551

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8