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CVE-2022-39239— nefly-ipx subject to Server-Side Request Forgery and Stored Cross-Site Scripting via Cache Poisoning and Improper Host Validation

Quick assessment

Affected
netlify netlify-ipx
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.

Netlify netlify-ipx是美国Netlify公司的一个库。用于对 Netlify 进行按需图像优化。 Netlify netlify-ipx 1.2.3之前版本存在代码问题漏洞。攻击者利用该漏洞可以通过发送特制构建的header绕过源图像域allowlist，从而导致处理程序加载并返回任意图像。

CVSS 6.1 · Medium EPSS 0.37% · P30
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I. Basic Information for CVE-2022-39239

Vulnerability Information
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Vulnerability Title
nefly-ipx subject to Server-Side Request Forgery and Stored Cross-Site Scripting via Cache Poisoning and Improper Host Validation
Source: CVE Program / CVE List V5
Vulnerability Description
netlify-ipx is an on-Demand image optimization for Netlify using ipx. In versions prior to 1.2.3, an attacker can bypass the source image domain allowlist by sending specially crafted headers, causing the handler to load and return arbitrary images. Because the response is cached globally, this image will then be served to visitors without requiring those headers to be set. XSS can be achieved by requesting a malicious SVG with embedded scripts, which would then be served from the site domain. Note that this does not apply to images loaded in `<img>` tags, as scripts do not execute in this context. The image URL can be set in the header independently of the request URL, meaning any site images that have not previously been cached can have their cache poisoned. This problem has been fixed in version 1.2.3. As a workaround, cached content can be cleared by re-deploying the site.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Netlify netlify-ipx 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netlify netlify-ipx是美国Netlify公司的一个库。用于对 Netlify 进行按需图像优化。 Netlify netlify-ipx 1.2.3之前版本存在代码问题漏洞。攻击者利用该漏洞可以通过发送特制构建的header绕过源图像域allowlist，从而导致处理程序加载并返回任意图像。
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
netlify netlify-ipx < 1.2.3 -

II. Public POCs for CVE-2022-39239

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III. Intelligence Information for CVE-2022-39239

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Vendor Advisories for CVE-2022-39239 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2022-39239

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