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CVE-2024-45816— Storage bucket Directory Traversal in @backstage/plugin-techdocs-backend

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Backstage开源的一个应用软件。后台是一个开放的平台,用于构建开发者门户。 Backstage 1.10.13之前版本存在安全漏洞，该漏洞源于使用AWS S3或GCS存储提供者用于TechDocs时，可能会访问到整个存储桶的内容，这可能导致泄露存储桶内非意图可访问的内容，并绕过Backstage中的权限检查。

CVSS 6.5 · Medium EPSS 0.73% · P53

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2024-45816

Vulnerability Information
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Vulnerability Title
Storage bucket Directory Traversal in @backstage/plugin-techdocs-backend
Source: CVE Program / CVE List V5
Vulnerability Description
Backstage is an open framework for building developer portals. When using the AWS S3 or GCS storage provider for TechDocs it is possible to access content in the entire storage bucket. This can leak contents of the bucket that are not intended to be accessible, as well as bypass permission checks in Backstage. This has been fixed in the 1.10.13 release of the `@backstage/plugin-techdocs-backend` package. All users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5
Vulnerability Title
Backstage 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Backstage是Backstage开源的一个应用软件。后台是一个开放的平台,用于构建开发者门户。 Backstage 1.10.13之前版本存在安全漏洞，该漏洞源于使用AWS S3或GCS存储提供者用于TechDocs时，可能会访问到整个存储桶的内容，这可能导致泄露存储桶内非意图可访问的内容，并绕过Backstage中的权限检查。
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 < 1.10.13 -

II. Public POCs for CVE-2024-45816

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III. Intelligence Information for CVE-2024-45816

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Same Patch Batch · backstage · 2024-09-17 · 3 CVEs total

CVE-2024-45815 6.5 MEDIUM Prototype pollution in @backstage/plugin-catalog-backend
CVE-2024-46976 6.5 MEDIUM Circumvention of cross site scripting Protection in @backstage/plugin-techdocs-backend

IV. Related Vulnerabilities

Same product: backstage
Same vendor: backstage
Same weakness: CWE-23

V. Comments for CVE-2024-45816

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