National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-9852 Detail

Current Description

LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.8 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (V3.0 legend)
Impact Score: 5.9
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/ Mailing List Third Party Advisory
https://seclists.org/bugtraq/2019/Aug/28 Mailing List Third Party Advisory
https://seclists.org/bugtraq/2019/Sep/17
https://usn.ubuntu.com/4102-1/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4501 Third Party Advisory
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852 Patch Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
6.2.6


Change History

10 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9852
NVD Published Date:
08/15/2019
NVD Last Modified:
09/02/2019