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CVE-2024-26150— `@backstage/backend-common` vulnerable to path traversal through symlinks

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 backend-common存在安全漏洞，该漏洞源于使用“resolveSafeChildPath”进行的路径检查不够详尽。攻击者利用该漏洞可以访问存储在web根文件夹之外的文件和目录。

CVSS 8.7 · High EPSS 0.80% · P55

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2024-26150

Vulnerability Information
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Vulnerability Title
`@backstage/backend-common` vulnerable to path traversal through symlinks
Source: CVE Program / CVE List V5
Vulnerability Description
`@backstage/backend-common` is a common functionality library for backends for Backstage, an open platform for building developer portals. In `@backstage/backend-common` prior to versions 0.21.1, 0.20.2, and 0.19.10, paths checks with the `resolveSafeChildPath` utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers. This issue is patched in `@backstage/backend-common` versions 0.21.1, 0.20.2, and 0.19.10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/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
Vulnerability Title
Backstage 安全漏洞
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 backend-common存在安全漏洞，该漏洞源于使用“resolveSafeChildPath”进行的路径检查不够详尽。攻击者利用该漏洞可以访问存储在web根文件夹之外的文件和目录。
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 = 0.21.0 -

II. Public POCs for CVE-2024-26150

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III. Intelligence Information for CVE-2024-26150

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Patches & Fixes for CVE-2024-26150 (3)

Vendor Advisories for CVE-2024-26150 (1)

IV. Related Vulnerabilities

Same product: backstage
Same vendor: backstage
Same weakness: CWE-22

V. Comments for CVE-2024-26150

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