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CVE-2022-33879— Incomplete fix and new regex DoS in StandardsExtractingContentHandler

Quick assessment

Affected
Apache Software Foundation Apache Tika
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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）基金会的一个集成了POI（使用Java程序对MicrosoftOffice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 1.28.4 之前版本和 2.4.1 之前版本存在安全漏洞，该漏洞源于 StandardsExtractingContentHandler 存在正则表达式拒绝服务攻击。

AI Predicted 5.3 Difficulty: Moderate EPSS 1.98% · P80

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2022-33879

Vulnerability Information
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Vulnerability Title
Incomplete fix and new regex DoS in StandardsExtractingContentHandler
Source: CVE Program / CVE List V5
Vulnerability Description
The initial fixes in CVE-2022-30126 and CVE-2022-30973 for regexes in the StandardsExtractingContentHandler were insufficient, and we found a separate, new regex DoS in a different regex in the StandardsExtractingContentHandler. These are now fixed in 1.28.4 and 2.4.1.
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）基金会的一个集成了POI（使用Java程序对MicrosoftOffice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 1.28.4 之前版本和 2.4.1 之前版本存在安全漏洞，该漏洞源于 StandardsExtractingContentHandler 存在正则表达式拒绝服务攻击。
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 Tika ~ 2.4.1 -

II. Public POCs for CVE-2022-33879

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III. Intelligence Information for CVE-2022-33879

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Vendor Advisories for CVE-2022-33879 (1)

Mailing List Discussions for CVE-2022-33879 (2)

IV. Related Vulnerabilities

Same product: Apache Tika
Same vendor: Apache Software Foundation

V. Comments for CVE-2022-33879

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