CVE-2021-40439

MEDIUM

Apache OpenOffice <4.1.10 - DoS

Title source: llm

Description

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.

References (3)

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2021/10/07/4

[Mailing List] https://lists.apache.org/thread.html/r41eca5f4f09e74436cbb05dec450fc2bef37b5d3e966aa7cc5fada6d%40%3Cannounce.apache.org%3E

[Mailing List, Vendor Advisory] https://lists.apache.org/thread.html/rfb2c193360436e230b85547e85a41bea0916916f96c501f5b6fc4702%40%3Cusers.openoffice.apache.org%3E

Scores

CVSS v3 6.5

EPSS 0.0039

EPSS Percentile 59.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

CWE

CWE-611

Status published

Affected Products (1)

apache/openoffice < 4.1.10

Timeline

Published Oct 07, 2021

Tracked Since Feb 18, 2026