CVE-2021-43783

@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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:backstage:backstage:*:*:*:*:*:*:*:*

History

01 Dec 2021, 19:41

Type Values Removed Values Added
CPE cpe:2.3:a:backstage:backstage:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : 8.5
v2 : 5.5
v3 : 8.5
References (MISC) https://github.com/backstage/backstage/commit/f9352ab606367cd9efc6ff048915c70ed3013b7f - (MISC) https://github.com/backstage/backstage/commit/f9352ab606367cd9efc6ff048915c70ed3013b7f - Patch, Third Party Advisory
References (CONFIRM) https://github.com/backstage/backstage/security/advisories/GHSA-mg3m-f475-28hv - (CONFIRM) https://github.com/backstage/backstage/security/advisories/GHSA-mg3m-f475-28hv - Third Party Advisory

29 Nov 2021, 20:20

Type Values Removed Values Added
New CVE

Information

Published : 2021-11-29 20:15

Updated : 2023-12-10 14:09


NVD link : CVE-2021-43783

Mitre link : CVE-2021-43783

CVE.ORG link : CVE-2021-43783


JSON object : View

Products Affected

backstage

  • backstage
CWE
CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')