CVE-2018-6871 — LibreOffice before 5

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2018-02-09T06:00:00.000Z
• Last modified: 2024-08-05T06:17:16.567Z

09References

• www.exploit-db.com — https://www.exploit-db.com/exploits/44022/
• usn.ubuntu.com — https://usn.ubuntu.com/3579-1/
• github.com — https://github.com/jollheef/libreoffice-remote-arbitrary-file-disclosure
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:0517
• cgit.freedesktop.org — https://cgit.freedesktop.org/libreoffice/core/commit/?h=libreoffice-5-4-5&id=a91…
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:0418
• www.libreoffice.org — https://www.libreoffice.org/about-us/security/advisories/cve-2018-1055/
• www.debian.org — https://www.debian.org/security/2018/dsa-4111