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CVE-2017-20284— Caucho Resin resin-doc Unauthenticated Path Traversal via jndi-appconfig Servlet

Quick assessment

Affected
Caucho Technology, Inc. Resin
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.

Caucho Resin 的文档 Web 应用（resin-doc）存在路径遍历漏洞。未认证的远程攻击者可以通过 jndi-appconfig 教程 Servlet 的 请求参数提供相对路径，从而读取任意文件。攻击者可以在该 Servlet 端点构造包含目录遍历序列的请求，以读取底层系统上位于预期教程目录之外的文件。该漏洞的利用证据最早由 Shadowserver 基金会于 2021 年 12 月 10 日观察到。

CVSS 7.5 · High EPSS 1.17% · P67

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
Caucho Technology, Inc. Resin * affected
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I. Basic Information for CVE-2017-20284

Vulnerability Information
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Vulnerability Title
Caucho Resin resin-doc Unauthenticated Path Traversal via jndi-appconfig Servlet
Source: CVE Program / CVE List V5
Vulnerability Description
Caucho Resin contains a path traversal vulnerability in the documentation webapp (resin-doc) that allows remote unauthenticated attackers to read arbitrary files by supplying a relative path through the inputFile request parameter of the jndi-appconfig tutorial servlet. Attackers can craft requests with directory traversal sequences to the servlet endpoint to read files outside the intended tutorial directory on the underlying system. Exploitation evidence was first observed by the Shadowserver Foundation on 2021-12-10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Caucho Technology, Inc. Resin * -

II. Public POCs for CVE-2017-20284

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2017-20284

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Proof of Concept for CVE-2017-20284 (1)

Security Blog Posts for CVE-2017-20284 (1)

Other References for CVE-2017-20284 (2)

IV. Related Vulnerabilities

Same weakness: CWE-22