CVE-2025-24034 Himmelblau leaks credentials in the debug log
Himmelblau leaks user access tokens and Kerberos TGTs in debug logs, exposing sensitive credentials to attackers with log access.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-24034?
CVE-2025-24034 is a low-severity vulnerability in himmelblau-idm himmelblau, published on 23 Jan 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Starting in version 0.7.0 and prior to versions 0.7.15 and 0.8.3, Himmelblau is vulnerable to leaking credentials in debug logs. When debug logging is enabled, user access tokens are inadvertently logged, potentially exposing sensitive authentication data. Similarly, Kerberos Ticket-Granting Tickets (TGTs) are logged when debug logging is enabled. Both issues pose a risk of exposing sensitive credentials, particularly in environments where debug logging is enabled. Himmelblau versions 0.7.15 and 0.8.3 contain a patch that fixes both issues. Some workarounds are available for users who are unable to upgrade. For the **logon compliance script issue**, disable the `logon_script` option in `/etc/himmelblau/himmelblau.conf`, and avoid using the `-d` flag when starting the `himmelblaud` daemon. For the Kerberos CCache issue, one may disable debug logging globally by setting the `debug` option in `/etc/himmelblau/himmelblau.conf` to `false` and avoiding the `-d` parameter when starting `himmelblaud`.
Weakness: CWE-532
Which versions are affected by CVE-2025-24034?
How do I fix CVE-2025-24034?
No fix has been published for CVE-2025-24034 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-24034 being exploited?
There is no known exploitation of CVE-2025-24034 in the wild and no public exploit code.
Sources
Also known as GHSA-p989-2f5w-9cf6.