What’s Vulnerable › Vulnerabilities

CVE-2018-6871

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 22.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-02-09 · updated 2026-06-17

Description

LibreOffice before 5.4.5 and 6.x before 6.0.1 allows remote attackers to read arbitrary files via =WEBSERVICE calls in a document, which use the COM.MICROSOFT.WEBSERVICE function.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 17.10
• Debian Linux: 9.0
• The Document Foundation LibreOffice: before 5.4.5; 6.0.0, 6.0.0-alpha1, 6.0.0-beta1, 6.0.0-beta2 — fixed in 5.4.5
• RedHat Enterprise Linux Desktop: 6.0, 7.0
• RedHat Enterprise Linux Server: 6.0, 7.0
• RedHat Enterprise Linux Server Aus: 7.4, 7.6
• RedHat Enterprise Linux Server Eus: 7.4, 7.5, 7.6
• RedHat Enterprise Linux Server Tus: 7.4, 7.6
• RedHat Enterprise Linux Workstation: 6.0, 7.0

How to fix

Upgrade to a fixed version: The Document Foundation LibreOffice 5.4.5. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2018:0418
• https://access.redhat.com/errata/RHSA-2018:0517
• https://cgit.freedesktop.org/libreoffice/core/commit/?h=libreoffice-5-4-5&id=a916fc0c0e0e8b10cb4158fa0fa173fe205d434a
• https://github.com/jollheef/libreoffice-remote-arbitrary-file-disclosure
• https://usn.ubuntu.com/3579-1/
• https://www.debian.org/security/2018/dsa-4111
• https://www.exploit-db.com/exploits/44022/
• https://www.libreoffice.org/about-us/security/advisories/cve-2018-1055/
• https://access.redhat.com/errata/RHSA-2018:0418
• https://access.redhat.com/errata/RHSA-2018:0517
• https://cgit.freedesktop.org/libreoffice/core/commit/?h=libreoffice-5-4-5&id=a916fc0c0e0e8b10cb4158fa0fa173fe205d434a
• https://github.com/jollheef/libreoffice-remote-arbitrary-file-disclosure

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