PT-2023-25385 · Npm · @Backstage/Plugin-Scaffolder-Backend

Rugvip · Published 2023-06-21 · Updated 2023-06-29 · CVE-2023-35926

Positive Technologies (AI Summary)

CVSS v3.1

8.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions @backstage/plugin-scaffolder-backend versions prior to 1.15.0

Description The Backstage scaffolder-backend plugin uses a templating library that requires a sandbox, allowing for code injection. A malicious actor with write access to a registered scaffolder template could manipulate the template for remote code execution on the scaffolder-backend instance. This was only exploitable in the template YAML definition itself, not by user input data.

Recommendations For versions prior to 1.15.0, update to version 1.15.0 of @backstage/plugin-scaffolder-backend to fix the issue. As a temporary workaround, consider controlling access to scaffolder templates and performing manual reviews of changes to these templates, as recommended by the Backstage Threat Model.

Exploit

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2023-35926

GHSA-WG6P-JMPC-XJMR

Affected Products

@Backstage/Plugin-Scaffolder-Backend

References · 8

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/35xxx/CVE-2023-35926.json · Exploit
• https://github.com/backstage/backstage/security/advisories/GHSA-wg6p-jmpc-xjmr · Vendor Advisory
• https://github.com/backstage/backstage/commit/fb7375507d56faedcb7bb3665480070593c8949a · Patch
• https://osv.dev/vulnerability/CVE-2023-35926 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-35926 · Security Note
• https://osv.dev/vulnerability/GHSA-wg6p-jmpc-xjmr · Vendor Advisory
• https://github.com/backstage/backstage · Note
• https://github.com/backstage/backstage/releases/tag/v1.15.0 · Note