CVE-2024-3183High· 8.1▾ MidnightPoC availableA 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…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 44.6 · likelihood 0.4 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
2.1%
1 GitHub repo (last check)
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).
freeipaipa (all versions)idm:DL1 (all versions)idm:DL1 (all versions)idm:DL1 (all versions)idm:DL1 (all versions)idm:DL1 (all versions)idm:DL1 (all versions)idm:DL1 (all versions)idm:DL1 (all versions)idm:DL1 (all versions)ipa (all versions)ipa (all versions)ipa (all versions)ipaRefer to the linked advisories for vendor-supplied fixes and affected version ranges.
To mitigate this vulnerability, ticket requests to user principals are now disallowed in FreeIPA realms by default. This will keep attackers from obtaining data encrypted with the user key directly.
Connected by shared product, vendor, weakness, or advisory.
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