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CVE-2018-11796

Quick assessment

Affected
Apache Software Foundation Apache Tika
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Tika是美国阿帕奇（Apache）软件基金会的一个集成了POI（使用Java程序对Microsoft Office格式文档提供读和写功能的开源函数库）、Pdfbox（读取和创建PDF文档的纯Java类库）并为文本抽取工作提供了统一界面的内容抽取工具集合。 Apache Tika 0.1版本至1.19版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 6.88% · P94

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2018-11796

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Apache Tika 1.19 (CVE-2018-11761), we added an entity expansion limit for XML parsing. However, Tika reuses SAXParsers and calls reset() after each parse, which, for Xerces2 parsers, as per the documentation, removes the user-specified SecurityManager and thus removes entity expansion limits after the first parse. Apache Tika versions from 0.1 to 1.19 are therefore still vulnerable to entity expansions which can lead to a denial of service attack. Users should upgrade to 1.19.1 or later.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tika 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Tika是美国阿帕奇（Apache）软件基金会的一个集成了POI（使用Java程序对Microsoft Office格式文档提供读和写功能的开源函数库）、Pdfbox（读取和创建PDF文档的纯Java类库）并为文本抽取工作提供了统一界面的内容抽取工具集合。 Apache Tika 0.1版本至1.19版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。
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 Tika Apache Tomcat 0.1 to 1.19 -

II. Public POCs for CVE-2018-11796

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III. Intelligence Information for CVE-2018-11796

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Vendor Advisories for CVE-2018-11796 (3)

Mailing List Discussions for CVE-2018-11796 (1)

IV. Related Vulnerabilities

Same product: Apache Tika
Same vendor: Apache Software Foundation

V. Comments for CVE-2018-11796

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