CVE-2021-40439— Billion Laughs
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I. Basic Information for CVE-2021-40439
Vulnerability Information
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Vulnerability Title
Billion Laughs
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache OpenOffice 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache OpenOffice是美国阿帕奇（Apache）基金会的一款开源的办公软件套件。该套件包含文本文档、电子表格、演示文稿、绘图、数据库等。 Apache OpenOffice存在代码问题漏洞，该漏洞源于Apache OpenOffice依赖于expat软件。Expat 2.1.0之前的版本受到CVE-2013-0340“Billion Laughs”实体扩展拒绝服务攻击，攻击者可以通过精心制作的XML文件加以利用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache OpenOffice | Apache OpenOffice ~ 4.1.10 | - |
II. Public POCs for CVE-2021-40439
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Apache Software Foundation · 2021-10-07 · 3 CVEs total
| CVE-2021-28129 | DEB packaging for Apache OpenOffice 4.1.8 installed with a non-root userid and groupid | |
| CVE-2021-42013 | Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomple |
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Same vendor: Apache Software Foundation
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V. Comments for CVE-2021-40439
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