CVE-2019-9855
Windows 8.3 path equivalence handling flaw allows LibreLogo script execution
Description
LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute arbitrary python commands contained with the document it is launched from. LibreOffice also has a feature where documents can specify that pre-installed scripts can be executed on various document script events such as mouse-over, etc. Protection was added to block calling LibreLogo from script event handers. However a Windows 8.3 path equivalence handling flaw left LibreOffice vulnerable under Windows that a document could trigger executing LibreLogo via a Windows filename pseudonym. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7; 6.3 versions prior to 6.3.1.
INFO
Published Date :
Sept. 6, 2019, 7:15 p.m.
Last Modified :
Nov. 21, 2024, 4:52 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2019-9855
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Upgrade to LibreOffice version 6.2.7, 6.3.1, or later.
- Apply the appropriate patches or updates for your specific Linux distribution, using the recommended installation methods.
Public PoC/Exploit Available at Github
CVE-2019-9855 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-9855.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.html | Mailing List Third Party Advisory |
| https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9855/ | Vendor Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.html | Mailing List Third Party Advisory |
| https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9855/ | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-9855 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-9855
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Path canonicalization that works with non-existing paths.
cross-platform filesystem path-manipulation rust rust-crate security utilities non-existing-paths path-canonicalization symlink-resolution
Shell Rust Python PowerShell
Prevent directory traversal with type-safe virtual path jails and safe symlinks
directory-traversal file-security filesystem-security path-validation rust rust-crate security type-safety web-security path-traversal-prevention
Shell Rust PowerShell RenderScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-9855 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-9855 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.html Added Reference https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9855/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Oct. 14, 2022
Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 22, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00055.html [No Types Assigned] -
CVE Modified by [email protected]
Sep. 25, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html [No Types Assigned] -
Initial Analysis by [email protected]
Sep. 09, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9855/ No Types Assigned https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9855/ Vendor Advisory Added CWE CWE-417 Added CPE Configuration AND OR *cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:* versions from (including) 6.2.0 up to (excluding) 6.2.7 *cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:* versions from (including) 6.3.0 up to (excluding) 6.3.1 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 9.8
Base CVSS Score: 7.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.67 }} -1.12%
score
0.69037
percentile