CVE-2021-43783

Katalog CVE

CVSS 8.5 · High EPSS 1,2%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada linuxfoundation backstage. Skor CVSS 3.1 8.5 (High) menurut NVD.

Deskripsi (NVD)

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. In affected versions a malicious actor with write access to a registered scaffolder template is able to manipulate the template in a way that writes files to arbitrary paths on the scaffolder-backend host instance. This vulnerability can in some situation also be exploited through user input when executing a template, meaning you do not need write access to the templates. This method will not allow the attacker to control the contents of the injected file however, unless the template is also crafted in a specific way that gives control of the file contents. This vulnerability is fixed in version `0.15.14` of the `@backstage/plugin-scaffolder-backend`. This attack is mitigated by restricting access and requiring reviews when registering or modifying scaffolder templates.

Rincian

Terbit di NVD

29 November 2021

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

8.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

1,2% peluang dieksploitasi; lebih tinggi dari 68,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/backstage/backstage/commit/f9352ab606367cd9efc6ff048915c70ed3013b7f patch · advisory pihak ketiga
• https://github.com/backstage/backstage/security/advisories/GHSA-mg3m-f475-28hv advisory pihak ketiga