CVE-2021-3406 Weak cryptography in keylime

What is CVE-2021-3406?

CVE-2021-3406 is a critical vulnerability in Fedoraproject Fedora, published on 25 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in keylime 5.8.1 and older. The issue in the Keylime agent and registrar code invalidates the cryptographic chain of trust from the Endorsement Key certificate to agent attestations.

Weakness: CWE-295, CWE-347

Which versions are affected by CVE-2021-3406?

It affects 2 products.

Products include Fedoraproject Fedora, Keylime Keylime.

How do I fix CVE-2021-3406?

No fix has been published for CVE-2021-3406 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-3406 being exploited?

There is no known exploitation of CVE-2021-3406 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-78f8-6c68-375m.