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 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 products
- Alt Linux, Almalinux, Astra Linux, Centos, Debian, Freeipa, Mit Kerberos, Red Hat
- Freeipa
- < 4.11.2, 4.12.0
- Fix
- Available
- CVSS 3.1
- 8.8 HIGH
- EPSS
- 0.7% (48th percentile)
- Weakness
- CWE-863
- NVD status
- Modified
- Published
- 2024-06-12
Workaround
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
No indexed exploits for CVE-2024-2698 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2024-2698 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.