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CVE-2023-25571— Backstage has XSS Vulnerability in Software Catalog

Quick assessment

Affected
backstage backstage
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.

backstage是一个应用软件。后台是一个开放的平台,用于构建开发者门户。 backstage catalog-model 1.2.0之前版本、backstage core-components 0.12.4 之前版本和 backstage plugin-catalog-backend1.7.2 之前版本存在安全漏洞，该漏洞源于允许具有访问权限的恶意行为者添加或修改 Backstage 软件目录实例中的内容，从而将脚本 URL 注入目录中存储的实体中，如果目录的用户随后单击恶意 URL，则可能导致 XS

CVSS 6.8 · Medium EPSS 0.45% · P37
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I. Basic Information for CVE-2023-25571

Vulnerability Information
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Vulnerability Title
Backstage has XSS Vulnerability in Software Catalog
Source: CVE Program / CVE List V5
Vulnerability Description
Backstage is an open platform for building developer portals. `@backstage/catalog-model` prior to version 1.2.0, `@backstage/core-components` prior to 0.12.4, and `@backstage/plugin-catalog-backend` prior to 1.7.2 are affected by a cross-site scripting vulnerability. This vulnerability allows a malicious actor with access to add or modify content in an instance of the Backstage software catalog to inject script URLs in the entities stored in the catalog. If users of the catalog then click on said URLs, that can lead to an XSS attack. This vulnerability has been patched in both the frontend and backend implementations. The default `Link` component from `@backstage/core-components` version 1.2.0 and greater will now reject `javascript:` URLs, and there is a global override of `window.open` to do the same. In addition, the catalog model v0.12.4 and greater as well as the catalog backend v1.7.2 and greater now has additional validation built in that prevents `javascript:` URLs in known annotations. As a workaround, the general practice of limiting access to modifying catalog content and requiring code reviews greatly help mitigate this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面编码URIScheme转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
backstage 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
backstage是一个应用软件。后台是一个开放的平台,用于构建开发者门户。 backstage catalog-model 1.2.0之前版本、backstage core-components 0.12.4 之前版本和 backstage plugin-catalog-backend1.7.2 之前版本存在安全漏洞，该漏洞源于允许具有访问权限的恶意行为者添加或修改 Backstage 软件目录实例中的内容，从而将脚本 URL 注入目录中存储的实体中，如果目录的用户随后单击恶意 URL，则可能导致 XS
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
backstage backstage < 1.2.0 -

II. Public POCs for CVE-2023-25571

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III. Intelligence Information for CVE-2023-25571

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Patches & Fixes for CVE-2023-25571 (1)

Vendor Advisories for CVE-2023-25571 (1)

IV. Related Vulnerabilities

Same product: backstage
Same vendor: backstage
Same weakness: CWE-84

V. Comments for CVE-2023-25571

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