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PYSEC-2026-1488
No affected components available
Impact
The Keylime registrar implemented more strict type checking on version 7.12.0. As a result, when updated to version 7.12.0, the registrar will not accept the format of the data previously stored in the database by versions >= 7.8.0, raising an exception.
This makes the Keylime registrar vulnerable to a Denial-of-Service attack in an update scenario, as an attacker could populate the registrar database by creating multiple valid agent registrations with different UUIDs while the version is still < 7.12.0. Then, when the Keylime registrar is updated to the 7.12.0 version, any query to the database matching any of the entries populated by the attacker will result in failure.
Patches
Users should upgrade to versions >= 7.12.1
Workarounds
- Remove the registrar database and re-register all agents
Credit
Reported by: Anderson Toshiyuki Sasaki/@ansasaki Patched by: Anderson Toshiyuki Sasaki/@ansasaki
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a low impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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