cbcvebase.
CVE-2018-10583
published 2018-05-01

CVE-2018-10583: An information disclosure vulnerability occurs when LibreOffice 6.0.3 and Apache OpenOffice Writer 4.1.5 automatically process and initiate an SMB connection…

PriorityP267high7.5CVSS 3.0
AVNACLPRNUINSUCHINAN
EXPLOIT
EPSS
78.68%
99.5th percentile
An information disclosure vulnerability occurs when LibreOffice 6.0.3 and Apache OpenOffice Writer 4.1.5 automatically process and initiate an SMB connection embedded in a malicious file, as demonstrated by xlink:href=file://192.168.0.2/test.jpg within an office:document-content element in a .odt XML document.

Affected

13 ranges
VendorProductVersion rangeFixed in
apacheopenoffice
canonicalubuntu_linux
canonicalubuntu_linux
debiandebian_linux
debiandebian_linux
debiandebian_linux
debianlibreoffice
libreofficelibreoffice
libreofficelibreoffice>= 0 < 1:4.2.8-0ubuntu5.51:4.2.8-0ubuntu5.5
libreofficelibreoffice>= 0 < 1:5.1.6~rc2-0ubuntu1~xenial61:5.1.6~rc2-0ubuntu1~xenial6
redhatenterprise_linux_desktop
redhatenterprise_linux_server
redhatenterprise_linux_workstation

Detection & IOCsextracted from sources · hover to see the quote

otherxlink:href=file://192.168.0.2/test.jpg within an office:document-content element in a .odt XML document
filenamecontent.xml
path/etc/passwd
  • Detect .odt files containing an xlink:href attribute pointing to a UNC/SMB file:// path (e.g., file://[IP]/[resource]) inside the content.xml of the archive, which triggers automatic SMB connection initiation on document open.
  • Inspect .odt/.odf ZIP archives for a content.xml containing draw:object or draw:image elements with xlink:href values referencing remote file:// or http:// URIs — this is the payload delivery mechanism for CVE-2018-10583.
  • Monitor outbound SMB (TCP 445/139) connections originating from LibreOffice or OpenOffice processes immediately after a document is opened — this indicates exploitation of the automatic SMB connection initiation vulnerability.
  • Alert on LibreOffice/OpenOffice processes spawning network connections to external IPs, particularly over SMB ports, as the exploit leaks NetNTLM credentials via forced SMB authentication.
  • ·The vulnerability affects LibreOffice 6.0.3 and Apache OpenOffice Writer 4.1.5 specifically; Red Hat Enterprise Linux 8 is listed as not affected, and RHEL 6 is 'Will not fix'.
  • ·Debian (bookworm, bullseye, forky, sid, trixie) still lists CVE-2018-10583 as open — patching status should be verified per distribution before assuming coverage.
  • ·The exploit requires user interaction — a user must be tricked into opening the specially crafted document for the SMB connection to be automatically initiated.

CVSS provenance

nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian7.5LOW
vendor_redhat7.5HIGH
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