CVE-2024-2698
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- CVE-2024-2698
CVE Details
| Release Date: | 2024-06-10 |
Description
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.\nIn 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.
See more information about CVE-2024-2698 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 7.1 | Base Metrics: | AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
| Access Vector: | Network | Attack Complexity: | Low |
| Privileges Required: | Low | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | High |
| Integrity Impact: | Low | Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (bind-dyndb-ldap) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (custodia) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (ipa) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (ipa-healthcheck) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (opendnssec) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (python-jwcrypto) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (python-kdcproxy) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (python-qrcode) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (python-yubico) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (pyusb) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (slapi-nis) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 8 (softhsm) | ELSA-2024-3755 | 2024-06-11 |
| Oracle Linux version 9 (ipa) | ELSA-2024-3754 | 2024-06-10 |
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