Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1xbWMyLWpwcjUtN3JnOc4ABB_p

Backstage Scaffolder plugin vulnerable to Server-Side Request Forgery

Impact

A vulnerability is identified in Backstage Scaffolder template functionality where Server-Side Template Injection (SSTI) can be exploited to perform Git config injection. The vulnerability allows an attacker to capture privileged git tokens used by the Backstage Scaffolder plugin. With these tokens, unauthorized access to sensitive resources in git can be achieved. The impact is considered medium severity as the Backstage Threat Model recommends restricting access to adding and editing templates in the Backstage Catalog plugin.

Patches

The issue has been resolved in versions v0.4.12, v0.5.1 and v0.6.1 of the @backstage/plugin-scaffolder-node package. Users are encouraged to upgrade to this version to mitigate the vulnerability.

Workarounds

Users can ensure that templates do not change git config.

References

If you have any questions or comments about this advisory:

Open an issue in the Backstage repository
Visit our Discord, linked to in Backstage README

Permalink: https://github.com/advisories/GHSA-qmc2-jpr5-7rg9
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1xbWMyLWpwcjUtN3JnOc4ABB_p
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 2 months ago
Updated: 2 months ago

CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N

EPSS Percentage: 0.00043
EPSS Percentile: 0.10511

Identifiers: GHSA-qmc2-jpr5-7rg9, CVE-2024-53983
References:

• https://github.com/backstage/backstage/security/advisories/GHSA-qmc2-jpr5-7rg9
• https://nvd.nist.gov/vuln/detail/CVE-2024-53983
• https://github.com/backstage/backstage/tree/master/plugins/scaffolder-node
• https://github.com/advisories/GHSA-qmc2-jpr5-7rg9

Repository: https://github.com/backstage/backstage
Blast Radius: 9.3

Affected Packages