Bug 694208
| Summary: | krb5 backed by ldap performing excessive reference count during kinit throws error result: 11 Administrative limit exceeded | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jr Aquino <jr.aquino> |
| Component: | krb5 | Assignee: | Nalin Dahyabhai <nalin> |
| Status: | CLOSED NEXTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 14 | CC: | nalin, rcritten, ssorce |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | 1.9 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-04-07 15:41:56 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
389-ds logged the query as: SRCH base="dc=example,dc=com" scope=2 filter="(krbPwdPolicyReference=cn=global_policy,cn=EXAMPLE.COM,cn=kerberos,dc=expertcity,dc=com)" attrs="krbPwdPolicyReference" It looks like a reference counter function, krb5_ldap_get_reference_count(), is the culprit. It looks like the 2 callers just want the result to be non-zero so we don't need an exact count. I think it should be enough to catch limit errors and return success (and a count of 1). This problem appears to be resolved in version 1.9 / FC15 I would be interested in understanding the delta that fixed this in 1.9, but this ticket can now be closed as the 'supported' version of the kdc + ldap doesn't have this issue. |
Description of problem: krb5 backed by ldap performing excessive reference count during kinit throws error result: 11 Administrative limit exceeded When kinit is called, a reference count is performed which looks for all objects which the kerberos policy is applied. This is causing problems when the ldap return limit is set and a greater number of users exist to return. Version-Release number of selected component (if applicable): krb5-server-ldap-1.8.2-9.fc14.x86_64 krb5-server-1.8.2-9.fc14.x86_64 krb5-devel-1.8.2-9.fc14.x86_64 krb5-libs-1.8.2-9.fc14.x86_64 How reproducible: 100% Steps to Reproduce: 1. Install and configure krb5kdc with the ldap backend 2. set an ns-slapd ldap search result limit greater than the number of users present 3. attempt to kinit a user. Actual results: #kinit username kinit: Generic error (see e-text) while getting initial credentials /var/log/krb5kdc.log: Apr 06 11:06:03 auth1.example.com krb5kdc[26469](info): AS_REQ (4 etypes {18 17 16 23}) 10.22.6.240: LOOKING_UP_CLIENT: username for krbtgt/EXAMPLE.COM, Administrative limit exceeded Expected results: Successful kinit Additional info: