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CVE-2023-35926

Insecure sandbox in Backstage Scaffolder plugin

Published: Jun 22, 2023Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-94
NVD MITRE
8.0CVSSHIGH
EPSS Score
1.9%
Top 23.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Backstage is an open platform for building developer portals. The Backstage scaffolder-backend plugin uses a templating library that requires sandbox, as it by design allows for code injection. The library used for this sandbox so far has been `vm2`, but in light of several past vulnerabilities and existing vulnerabilities that may not have a fix, the plugin has switched to using a different sandbox library. A malicious actor with write access to a registered scaffolder template could manipulate the template in a way that allows for remote code execution on the scaffolder-backend instance. This was only exploitable in the template YAML definition itself and not by user input data. This is vulnerability is fixed in version 1.15.0 of `@backstage/plugin-scaffolder-backend`.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-94

Affected Products

backstagebackstage
SaaS
DevTools & CI / source-control
@backstage/plugin-scaffolder-backendnpmOSS Libraries
backstagelinuxfoundation
Mixed
AI / ML / ml-framework
backstagecommercialDevTools & CI
npmpackage-ecosystemOSS Libraries
linuxfoundationoss-projectUSAI / MLaka yocto, pytorch, everest

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/backstage/backstage/security/advisories/GHSA-wg6p-jmpc-xjmr
github.com
https://github.com/backstage/backstage/commit/fb7375507d56faedcb7bb3665480070593c8949a
github.com
https://github.com/backstage/backstage/releases/tag/v1.15.0
github.com
and 2 more references View all →

Timeline

Published
Jun 22, 2023
Last Updated
Nov 21, 2024

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