CVE-2019-9850: canonical ubuntu_linux Improper Input Validation
Vulnerability summary
CVE-2019-9850 is a critical (CVSS 9.8) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 2.93% chance of exploitation in the next 30 days, higher than 86.8% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 12 · Related 7Timeline
- 15-08-2019PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
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 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 metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.93%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
-0.44 pp
From 3.37% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- libreoffice< 1:6.3.0-1
- debian_linuxEOL8.0 | 9.0 | 10.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.04
Document foundation1 product
- libreoffice≥ unspecified, < 6.2.6
Fedoraproject1 product
- fedoraEOL29 | 30
Libreoffice1 product
- libreoffice< 6.2.6
Opensuse1 product
- leapEOL15.0 | 15.1
Ubuntu1 product
- libreoffice< 1:5.1.6~rc2-0ubuntu1~xenial9 | < 1:6.0.7-0ubuntu0.18.04.9
7 vendors · 8 products
References
14 links- www.libreoffice.org/about-us/security/advisories/CVE-2019-9850X Refsource CONFIRMREPORTVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/10/msg00005.htmlMailing ListX Refsource MLISTThird Party Advisory