Bug 866605
| Summary: | Fedora 18 avc denial for useradd transition to nscd | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Scott Poore <spoore> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 18 | CC: | dominick.grift, dwalsh, jmontleo, mgrepl, rcritten |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2012-12-20 15:15:57 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
FYI, I have confirmed that this is not consistently reproducing the ipa-replica-install problem. Here's some /var/log/ipareplica-install.log output from an attempt to reproduce: 2012-10-15T17:45:43Z DEBUG adding ds user dirsrv 2012-10-15T17:45:43Z DEBUG args=/usr/sbin/useradd -g dirsrv -c DS System User -d /var/lib/dirsrv -s /sb in/nologin -M -r dirsrv 2012-10-15T17:45:43Z DEBUG stdout= 2012-10-15T17:45:43Z DEBUG stderr=useradd: cannot execute /usr/sbin/nscd: Permission denied useradd: nscd exited with status 126 useradd: Failed to flush the nscd cache. useradd: cannot execute /usr/sbin/nscd: Permission denied useradd: nscd exited with status 126 useradd: Failed to flush the nscd cache. useradd: cannot execute /usr/sbin/nscd: Permission denied useradd: nscd exited with status 126 useradd: Failed to flush the nscd cache. useradd: cannot execute /usr/sbin/nscd: Permission denied useradd: nscd exited with status 126 useradd: Failed to flush the nscd cache. 2012-10-15T17:45:43Z DEBUG done adding user in the failed attempt earlier though, the user was not created. And I saw no other AVC denials. Fixed in selinux-policy-3.11.1-40.fc18.noarch selinux-policy-3.11.1-43.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/selinux-policy-3.11.1-43.fc18 selinux-policy-3.11.1-46.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/selinux-policy-3.11.1-46.fc18 Package selinux-policy-3.11.1-46.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing selinux-policy-3.11.1-46.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-16862/selinux-policy-3.11.1-46.fc18 then log in and leave karma (feedback). selinux-policy-3.11.1-46.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: With nscd installed, ipa-replica-install seems to fail because of an AVC denial for useradd. Some digging makes it seem like it's an AVC denial problem? Version-Release number of selected component (if applicable): selinux-policy-3.11.1-36.fc18.noarch nscd-2.16-20.fc18.x86_64 How reproducible: unknown Steps to Reproduce: On F18 server (my case was a minimal install). 1. yum -y install nscd 2. yum -y install freeipa-server bind bind-dyndb-ldap 3. on existing ipa server: ipa-replica-prepare -p <PASSWD> --ip-address=<IP> <hostname> 4. copy /var/lib/ipa/replica-info-<hostname>.gpg file to new server 5. ipa-replica-install -U --setup-dns --setup-ca --forwarder=<DNSFORWARD> -w <PASSWD> -p <PASSWD> replica-info-<HOSTNAME>.gpg Actual results: ipa-replica-install output: ... Configuring directory server: Estimated time 1 minute [1/31]: creating directory server user [2/31]: creating directory server instance Your system may be partly configured. Run /usr/sbin/ipa-server-install --uninstall to clean up. Unexpected error - see /var/log/ipareplica-install.log for details: KeyError: 'getpwnam(): name not found: dirsrv' I lost the /var/log/ipareplica-install.log errors but, it pointed to a problem with permissions for useradd accessing something nscd related. So, I checked for AVC denials. ausearch output: time->Mon Oct 15 12:59:52 2012 type=SYSCALL msg=audit(1350320392.966:941): arch=c000003e syscall=59 success=no exit=-13 a0=7f76bf3e7f43 a1=7fffc29cc0a0 a2=7fffc29cc090 a3=7f76bf3c2a90 items=0 ppid=7852 pid=7853 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=6 comm="useradd" exe="/usr/sbin/useradd" subj=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1350320392.966:941): avc: denied { transition } for pid=7853 comm="useradd" path="/usr/sbin/nscd" dev="dm-1" ino=155180 scontext=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:nscd_t:s0-s0:c0.c1023 tclass=process ---- time->Mon Oct 15 12:59:52 2012 type=SYSCALL msg=audit(1350320392.967:942): arch=c000003e syscall=59 success=no exit=-13 a0=7f76bf3e7f43 a1=7fffc29cc0a0 a2=7fffc29cc090 a3=7f76bf3c2a90 items=0 ppid=7852 pid=7854 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=6 comm="useradd" exe="/usr/sbin/useradd" subj=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1350320392.967:942): avc: denied { transition } for pid=7854 comm="useradd" path="/usr/sbin/nscd" dev="dm-1" ino=155180 scontext=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:nscd_t:s0-s0:c0.c1023 tclass=process ---- time->Mon Oct 15 12:59:52 2012 type=SYSCALL msg=audit(1350320392.968:943): arch=c000003e syscall=59 success=no exit=-13 a0=7f76bf3e7f43 a1=7fffc29cc4d0 a2=7fffc29cc4c0 a3=7f76bf3c2a90 items=0 ppid=7852 pid=7855 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=6 comm="useradd" exe="/usr/sbin/useradd" subj=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1350320392.968:943): avc: denied { transition } for pid=7855 comm="useradd" path="/usr/sbin/nscd" dev="dm-1" ino=155180 scontext=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:nscd_t:s0-s0:c0.c1023 tclass=process ---- time->Mon Oct 15 12:59:52 2012 type=SYSCALL msg=audit(1350320392.971:944): arch=c000003e syscall=59 success=no exit=-13 a0=7f76bf3e7f43 a1=7fffc29cc4d0 a2=7fffc29cc4c0 a3=7f76bf3c2a90 items=0 ppid=7852 pid=7856 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=6 comm="useradd" exe="/usr/sbin/useradd" subj=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1350320392.971:944): avc: denied { transition } for pid=7856 comm="useradd" path="/usr/sbin/nscd" dev="dm-1" ino=155180 scontext=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:nscd_t:s0-s0:c0.c1023 tclass=process Expected results: Additional info: One thing here confusing me is that there appears to be a rule for this: [root@f18-3 ~]# sesearch -s useradd_t -t nscd_t -c process --allow -C Found 1 semantic av rules: allow useradd_t nscd_t : process transition ;