CVE-2024-47762 Unexpected visibility of environment variable configurations in @backstage/plugin-app-backend
Attackers can read sensitive configuration secrets exposed via environment variables in Backstage developer portals, bypassing intended visibility restrictions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-47762?
CVE-2024-47762 is a medium-severity vulnerability in backstage, published on 3 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Backstage is an open framework for building developer portals. Configuration supplied through APP_CONFIG_* environment variables, for example APP_CONFIG_backend_listen_port=7007, where unexpectedly ignoring the visibility defined in configuration schema. This occurred even if the configuration schema specified that they should have backend or secret visibility. This was an intended feature of the APP_CONFIG_* way of supplying configuration, but now clearly goes against the expected behavior of the configuration system. This behavior leads to a risk of potentially exposing sensitive configuration details intended to remain private or restricted to backend processes. The issue has been resolved in version 0.3.75 of the @backstage/plugin-app-backend package. As a temporary measure, avoid supplying secrets using the APP_CONFIG_ configuration pattern. Consider alternative methods for setting secrets, such as the environment substitution available for Backstage configuration.
Weakness: CWE-440
Which versions are affected by CVE-2024-47762?
2 open source packages ship an affected version, including @backstage/plugin-app-backend.
| Package | Affected | Fixed in |
|---|---|---|
@backstage/plugin-app-backend npm | All versions | 0.3.75 |
@backstage/plugin-app-backend npm | All versions | 0.3.75 |
How do I fix CVE-2024-47762?
Upgrade @backstage/plugin-app-backend to 0.3.75 or later.
Is CVE-2024-47762 being exploited?
There is no known exploitation of CVE-2024-47762 in the wild and no public exploit code.
Sources
Also known as GHSA-qc4v-xq2m-65wc.