Arbitrary Code Injection Affecting libreoffice-help-bg package, versions <1:5.3.6.1-24.el7


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
1.59% (88th percentile)

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  • Snyk IDSNYK-CENTOS7-LIBREOFFICEHELPBG-2157026
  • published26 Jul 2021
  • disclosed15 Aug 2019

Introduced: 15 Aug 2019

CVE-2019-9850  (opens in a new tab)
CWE-94  (opens in a new tab)

How to fix?

Upgrade Centos:7 libreoffice-help-bg to version 1:5.3.6.1-24.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libreoffice-help-bg package and not the libreoffice-help-bg package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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 address CVE-2019-9848, to block calling LibreLogo from script event handers. However an insufficient url validation vulnerability in LibreOffice allowed malicious to bypass that protection and again trigger calling LibreLogo from script event handlers. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

CVSS Scores

version 3.1