Arbitrary Code Execution in LibreOffice via Document Events
CVE-2019-9848

9.8CRITICAL

Key Information:

Vendor

Document Foundation

Status
Libreoffice
Vendor
CVE Published:
17 July 2019

What is CVE-2019-9848?

LibreOffice's ability to execute pre-installed scripts during document events can be exploited to trigger arbitrary Python commands. This occurs through the use of LibreLogo, which when called from document event handlers, can run untrusted scripts without user consent. Successfully crafted documents can lead to silent execution of harmful code. Fixed versions of LibreOffice restrict this feature, ensuring that LibreLogo cannot be activated through document event handlers. This issue impacts LibreOffice installations prior to version 6.2.5, emphasizing the need for timely updates to mitigate risks.

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Deploy the Patch

Affected Version(s)

LibreOffice < 6.2.5

References

https://www.libreoffice.org/about-us/security/advisories/...
x_refsource_CONFIRM
https://usn.ubuntu.com/4063-1/
vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA

EPSS Score

86% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks to Nils Emmerich of ERNW Research GmbH for discovering and reporting this issue
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