ghsa-jhc8-v2x5-jvj5
Vulnerability from github
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": [],
"aliases": [
"CVE-2024-2698"
],
"database_specific": {
"cwe_ids": [
"CWE-284",
"CWE-863"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-12T08:15:50Z",
"severity": "HIGH"
},
"details": "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.\n\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.",
"id": "GHSA-jhc8-v2x5-jvj5",
"modified": "2024-06-27T03:30:55Z",
"published": "2024-06-12T09:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-2698"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:3754"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:3755"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:3757"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:3759"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-2698"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2270353"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WT3JL7JQDIAFKKEFARWYES7GZNWGQNCI"
},
{
"type": "WEB",
"url": "https://www.freeipa.org/release-notes/4-12-1.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
"type": "CVSS_V3"
}
]
}
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.