CVE Catalog

CVE-2024-3183

HighCVSS 8.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

High risk
2.05%

81th percentile - higher than 81% of all known CVEs

Summary

In FreeIPA, Kerberos TGS tickets are encrypted using the target principal key directly, which for user principals is a hash of a per-principal salt and the user's password. If a principal is compromised, an attacker can retrieve tickets encrypted to any principal and run offline brute-force attacks to recover passwords.

Risk Assessment

The vulnerability can lead to disclosure of user and principal passwords through offline attacks, enabling privilege escalation and further compromise within the Kerberos domain. The risk affects environments using FreeIPA and Kerberos.

Recommendation

Update FreeIPA to a version containing the fix for this vulnerability. Also enforce strong passwords and rotate passwords of principals that may have been exposed.

Other vulnerabilities in FreeIPA

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Original NVD description (English source)

A vulnerability was found in FreeIPA in a way when a Kerberos TGS-REQ is encrypted using the client’s session key. This key is different for each new session, which protects it from brute force attacks. However, the ticket it contains is encrypted using the target principal key directly. For user principals, this key is a hash of a public per-principal randomly-generated salt and the user’s password. If a principal is compromised it means the attacker would be able to retrieve tickets encrypted to any principal, all of them being encrypted by their own key directly. By taking these tickets and salts offline, the attacker could run brute force attacks to find character strings able to decrypt tickets when combined to a principal salt (i.e. find the principal’s password).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS