Input validation error in LibreOffice - CVE-2019-9853
Published: September 27, 2019
Vulnerability identifier: #VU21398
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-9853
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: LibreOffice
Affected software:
LibreOffice
LibreOffice
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input when decoding URL in macro location. While documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings. A remote attacker can create a specially crafted document that once opened will execute arbitrary macro on the system with privileges of the current user.
How to mitigate CVE-2019-9853
Install updates from vendor's website.