cbcvebase.
CVE-2024-2698
published 2024-06-12

CVE-2024-2698: A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for granting the "forwardable" flag on…

PriorityP353high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.67%
47.8th percentile
A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for granting the "forwardable" flag on S4U2Self tickets. Fixing this mistake required adding a special case for the check_allowed_to_delegate() function: If the target service argument is NULL, then it means the KDC is probing for general constrained delegation rules and not checking a specific S4U2Proxy request. In FreeIPA 4.11.0, the behavior of ipadb_match_acl() was modified to match the changes from upstream MIT Kerberos 1.20. However, a mistake resulting in this mechanism applies in cases where the target service argument is set AND where it is unset. This results in S4U2Proxy requests being accepted regardless of whether or not there is a matching service delegation rule.

Affected

5 ranges
VendorProductVersion rangeFixed in
debianfreeipa< freeipa 4.12.2-1 (forky)freeipa 4.12.2-1 (forky)
freeipafreeipa——
freeipafreeipa>= 0 < 4.12.2-14.12.2-1
freeipafreeipa>= 0 < 4.12.2-14.12.2-1
freeipafreeipa>= 4.11.0 < 4.11.24.11.2

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8LOW
vendor_redhat8.8HIGH
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