CVE-2021-3406CWE-347

A flaw was found in keylime 5.8.1 and older

published February 25, 2021

CVSS
—
EPSS
1%
Percentile
50.9
In the wild
Unconfirmed
What it is

⚠️ A flaw in Keylime 5.8.1 and older breaks the cryptographic chain of trust! It's like a recipe with a missing ingredient — the whole dish could fall apart! 🔍 Picture a restaurant where the chef forgot to check if the ingredients were fresh. If the key ingredient is expired, what you serve might lead to a bad experience — just like the broken trust in Keylime's agent and registrar code. Without a valid cryptographic chain of trust, attackers could potentially undermine the integrity of agent attestations, leading to severe security implications. It’s a sneaky door that opens up vulnerability in a system that relies on validated key certificates. Yikes!

Put simply

Picture a restaurant where the chef forgot to check if the ingredients were fresh. If the key ingredient is expired, what you serve might lead to a bad experience — just like the broken trust in Keylime's agent and registrar code. This vulnerability arises from an issue in Keylime's agent and registrar code that invalidates the chain of trust established by the Endorsement Key certificate to agent attestations, potentially allowing compromised agents to bypass security measures.

What to do

Without a valid cryptographic chain of trust, attackers could potentially undermine the integrity of agent attestations, leading to severe security implications. It’s a sneaky door that opens up vulnerability in a system that relies on validated key certificates. Yikes! To remediate, upgrade to Keylime version 5.8.2 or later to restore the integrity of the cryptographic chain. Additionally, conduct a thorough review of your system to ensure no outdated versions are in use. Stay vigilant! You've got this! With the right updates and reviews, you'll keep your environment secure and trustworthy. 💪🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00658 · 50.9th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2021-02-25T19:15Z
EPSS history
Timeline
  • 25 FEB 19:15Z
    A flaw was found in keylime 5.8.1 and older
    cvelistv5