RCE in Document Foundation Libreoffice
CVE-2019-9848
LibreOffice has a feature where documents can specify that pre-installed scripts can be executed on various document events such as mouse-over, etc. LibreOffice is typically also bundled with LibreLogo, a programmable turtle vector graphics script, which can be manipulated into executing arbitrary python commands. By using the document event feature to trigger LibreLogo to execute python contained within a document a malicious document could be constructed which would execute arbitrary python commands silently without warning. In the fixed versions, LibreLogo cannot be called from a document event handler. This issue affects: Document Foundation LibreOffice versions prior to 6.2.5.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.312 (98.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Document Foundation Libreoffice — versions unspecified
- Libreoffice
- Canonical Ubuntu_linux — versions 16.04, 18.04, 19.04
- Debian Debian_linux — versions 8.0
- Fedoraproject Fedora — versions 29, 30
- Opensuse Leap — versions 15.0, 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@documentfoundation.org (x_refsource_CONFIRM, Vendor Advisory)
- security@documentfoundation.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@documentfoundation.org (x_refsource_FEDORA, vendor-advisory)
- security@documentfoundation.org (vdb-entry, Broken Link, x_refsource_BID)
- security@documentfoundation.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- security@documentfoundation.org (mailing-list, x_refsource_BUGTRAQ, Mailing List, Third Party Advisory)
- security@documentfoundation.org (x_refsource_FEDORA, vendor-advisory)
- security@documentfoundation.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@documentfoundation.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@documentfoundation.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-9848?
- CVE-2019-9848 is a critical-severity vulnerability in Document Foundation Libreoffice, classified under Code Injection. CVSS score: 9.8/10. Published 2019-07-17.
- How severe is CVE-2019-9848?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-9848 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.