`@backstage/backend-common` vulnerable to path traversal through symlinks

Description

Paths checks with the resolveSafeChildPath utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers.

Recommendation

Update the @backstage/backend-common package to the latest compatible version. Followings are version details:

• Affected version(s): **>= 0.20.0, < 0.20.2

  < 0.19.10

  = 0.21.0**

• Patched version(s): **0.20.2

  0.19.10

  0.21.1**

References

• GHSA-2fc9-xpp8-2g9h
• CVE-2024-26150
• CWE-22
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• Agnai vulnerable to Relative Path Traversal in Image Upload - CVE-2024-47171
• Langchain Path Traversal vulnerability - CVE-2024-7774
• Nuxt Devtools has a Path Traversal: '../filedir - CVE-2024-23657
• Jan path traversal vulnerability - @janhq/core - CVE-2024-36858

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Tags:

npm

@backstage/backend-common