CVE-2024-26150: backstage Path Traversal — Fix

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.

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CVSS v3.1 Score

8.7

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Weakness Type (CWE)

CWE-22 Path Traversal

Affected Products

Vendor	Product	Versions
linuxfoundation	backstage_backend-common	< 0.19.10
linuxfoundation	backstage_backend-common	0.20.0 — 0.20.2
linuxfoundation	backstage_backend-common	All

References

Advisories & Patches

https://github.com/backstage/backstage/commit/1ad2b1b61ebb430051f7d804b0cc7ebfe7922b6f https://github.com/backstage/backstage/commit/78f892b3a84d63de2ba167928f171154c447b717 https://github.com/backstage/backstage/commit/edf65d7d31e027599c2415f597d085ee84807871 https://github.com/backstage/backstage/security/advisories/GHSA-2fc9-xpp8-2g9h https://github.com/backstage/backstage/commit/1ad2b1b61ebb430051f7d804b0cc7ebfe7922b6f https://github.com/backstage/backstage/commit/78f892b3a84d63de2ba167928f171154c447b717 https://github.com/backstage/backstage/commit/edf65d7d31e027599c2415f597d085ee84807871 https://github.com/backstage/backstage/security/advisories/GHSA-2fc9-xpp8-2g9h

Frequently Asked Questions

What is CVE-2024-26150? +

`@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. It has a CVSS v3.1 base score of 8.7 (HIGH).

How severe is CVE-2024-26150? +

CVE-2024-26150 has a CVSS v3.1 score of 8.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-26150? +

CVE-2024-26150 affects products from linuxfoundation, specifically: backstage_backend-common. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-26150? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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