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Date: Thu, 07 Oct 2021 15:20:29 +0000
From: Dave Fisher <>
Subject: CVE-2021-40439: Apache OpenOffice: Billion Laughs 

Severity: medium


Apache OpenOffice has a dependency on expat software. Versions prior to 2.1.0 were subject to CVE-2013-0340 a "Billion Laughs" entity expansion denial of service attack and exploit via crafted XML files. ODF files consist of a set of XML files.

All versions of Apache OpenOffice up to 4.1.10 are subject to this issue.

expat in version 4.1.11 is patched.

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