CVE-2024-51997 The Attestation Results Token can be arbitrarily modified without being detected in Trustee
Attackers can modify Attestation Results Tokens to bypass verification, allowing unauthorized access to secrets in Trustee deployments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-51997?
CVE-2024-51997 is a high-severity authentication bypass vulnerability in confidential-containers trustee, published on 8 Nov 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Trustee is a set of tools and components for attesting confidential guests and providing secrets to them. The ART (**Attestation Results Token**) token, generated by AS, could be manipulated by MITM attacker, but the verifier (CoCo Verification Demander like KBS) could still verify it successfully. In the payload of ART token, the ‘jwk’ could be replaced by attacker with his own pub key. Then attacker can use his own corresponding private key to sign the crafted ART token. Based on current code implementation (v0.8.0), such replacement and modification can not be detected. This issue has been addressed in version 0.8.2 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-287
Which versions are affected by CVE-2024-51997?
How do I fix CVE-2024-51997?
No fix has been published for CVE-2024-51997 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2024-51997 being exploited?
There is no known exploitation of CVE-2024-51997 in the wild and no public exploit code.
Sources
Also known as GHSA-7jc6-j236-vvjw.