A malicious scaffolder template can bypass the log redaction mechanism to exfiltrate secrets provided run through task event logs. The attack requires: The ability to register a template in the catalog A victim who executes the malicious template
Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to: Read arbitrary files via the debug:log action by creating a symlink pointing to sensitive files (e.g., /etc/passwd, configuration files, secrets) Delete arbitrary files via the fs:delete action by creating symlinks pointing outside the workspace Write files outside the workspace via archive extraction …
A logging flaw in Backstage Scaffolder’s fetch:template action up to @backstage/plugin-scaffolder-backend 2.1.0 may write template secrets to logs. The action emitted a duplicate, pre-redaction copy of input parameters, so values provided via the {{ secrets }} bag could appear in local/server logs when the action ran. Exploitation requires use of the secrets argument and access to Scaffolder/build logs; integrity and availability are unaffected. Fix: upgrade to 2.1.1, which removes the …
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 …
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in @backstage/plugin-scaffolder-backend.
@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates.This attack is mitigated by restricting access and requiring reviews when registering or modifying scaffolder templates.
Backstage is an open platform for building developer portals. The attack is executed by crafting a custom Scaffolder template with a github:publish:pull-request action and a particular source path. When the template is executed the sensitive files would be included in the published pull request. This vulnerability is mitigated by the fact that an attacker would need access to create and register templates in the Backstage catalog, and that the attack …