key-pair failure when selinux is in enforcing mode

Bug #1284485 reported by Richard Su on 2014-02-25
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Richard Su

Bug Description

After applying the patch in, you'll still get an avc denial.

devtest fails with this error:
ERROR: Keypair data is invalid: failed to generate fingerprint (HTTP 400) (Request-ID: req-a20787f8-954d-42ae-b925-471beee1e4b0)

On the seed node, /var/log/audit/audit.log shows:
type=AVC msg=audit(1393286662.806:45550): avc: denied { open } for pid=4837 comm="ssh-keygen" path="/tmp/tmpQZ8G83/" dev="vda1" ino=262175 scontext=system_u:system_r:ssh_keygen_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=file
type=SYSCALL msg=audit(1393286662.806:45550): arch=40000003 syscall=5 success=no exit=-13 a0=b770e760 a1=8000 a2=0 a3=b770e760 items=0 ppid=4614 pid=4837 auid=4294967295 uid=996 gid=994 euid=996 suid=996 fsuid=996 egid=994 sgid=994 fsgid=994 ses=4294967295 tty=(none) comm="ssh-keygen" exe="/usr/bin/ssh-keygen" subj=system_u:system_r:ssh_keygen_t:s0 key=(null)

What is strange is running ssh-keygen manually on the seed node to generate a file on /tmp/ succeeds.

Richard Su (rwsu) on 2014-02-25
Changed in tripleo:
status: New → Triaged
importance: Undecided → High

Fix proposed to branch: master

Changed in tripleo:
assignee: nobody → Richard Su (rwsu)
status: Triaged → In Progress

Submitter: Jenkins
Branch: master

commit 77d89ebad41d50458ec178cb94fa75d7e8cb3ae2
Author: Richard Su <email address hidden>
Date: Tue Jul 15 18:06:54 2014 -0700

    Custom policy for ssh-keygen failure

    This patch contains a custom policy to allow ssh-keygen to write to
    /tmp. This action is blocked by SELinux. The custom policy is needed
    until the upstream SELinux policy is updated for Fedora or nova is
    modified to call ssh-keygen to write out to a different directory.

    Partial-Bug: 1284485
    Change-Id: I59de4e88d9343e093a95436432e2e4d68f425d06

Richard Su (rwsu) on 2014-08-24
tags: added: selinux
Ben Nemec (bnemec) on 2016-04-19
Changed in tripleo:
status: In Progress → Fix Released
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