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Vulnerability Details : CVE-2019-9854

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-2019-9852, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed by employing a URL encoding attack to defeat the path verification step. However this protection could be bypassed by taking advantage of a flaw in how LibreOffice assembled the final script URL location directly from components of the passed in path as opposed to solely from the sanitized output of the path verification step. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7; 6.3 versions prior to 6.3.1.
Publish Date : 2019-09-06 Last Update Date : 2020-08-24
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- CVSS Scores & Vulnerability Types

CVSS Score
6.8
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Directory traversalBypass a restriction or similar
CWE ID 22

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:1151: libreoffice security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20201151 unix
RHSA-2020:1598: libreoffice security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20201598 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-9854

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 19.04 * * * Version Details Vulnerabilities
4 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
7 OS Fedoraproject Fedora 29 * * * Version Details Vulnerabilities
8 Application Libreoffice Libreoffice * * * * Version Details Vulnerabilities
9 OS Opensuse Leap 15.0 * * * Version Details Vulnerabilities
10 OS Opensuse Leap 15.1 * * * Version Details Vulnerabilities
11 OS Redhat Enterprise Linux 7.0 * * * Version Details Vulnerabilities
12 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 3
Fedoraproject Fedora 1
Libreoffice Libreoffice 1
Opensuse Leap 2
Redhat Enterprise Linux 2

- References For CVE-2019-9854

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.html
SUSE openSUSE-SU-2019:2361
https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html
MLIST [debian-lts-announce] 20191006 [SECURITY] [DLA 1947-1] libreoffice security update
https://usn.ubuntu.com/4138-1/
UBUNTU USN-4138-1
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html
SUSE openSUSE-SU-2019:2183
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XQKKOIY2DMZCXJINOLIQXD2NWISDKK3N/
FEDORA FEDORA-2019-9627e1402e
https://www.debian.org/security/2019/dsa-4519
DEBIAN DSA-4519
https://seclists.org/bugtraq/2019/Sep/17
BUGTRAQ 20190910 [SECURITY] [DSA 4519-1] libreoffice security update
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9854/ CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1769907
MISC

- Metasploit Modules Related To CVE-2019-9854

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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