What’s Vulnerable › Vulnerabilities

CVE-2024-36066

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-12 · updated 2026-06-17

Description

The CMP CLI client in KeyFactor EJBCA before 8.3.1 has only 6 octets of salt, and is thus not compliant with the security requirements of RFC 4211, and might make man-in-the-middle attacks easier. CMP includes password-based MAC as one of the options for message integrity and authentication (the other option is certificate-based). RFC 4211 section 4.4 requires that password-based MAC parameters use a salt with a random value of at least 8 octets. This helps to inhibit dictionary attacks. Because the standalone CMP client originally was developed as test code, the salt was instead hardcoded and only 6 octets long.

Affected products

• Keyfactor Ejbca: before 8.3.1 — fixed in 8.3.1

How to fix

Upgrade to a fixed version: Keyfactor Ejbca 8.3.1. Check the vendor advisory for mitigations.

References

• https://datatracker.ietf.org/doc/html/rfc4211#section-4.4
• https://support.keyfactor.com/hc/en-us/articles/26965687021595-EJBCA-Security-Advisory-EJBCA-standalone-CMP-CLI-client

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