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Bug 587255 - SELinux is preventing /usr/bin/ssh "read" access on .ssh.
SELinux is preventing /usr/bin/ssh "read" access on .ssh.
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
x86_64 Linux
low Severity medium
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Assigned To: Daniel Walsh
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2010-04-29 09:38 EDT by Adam Kovari
Modified: 2010-04-29 15:44 EDT (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2010-04-29 14:32:18 EDT
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Regression: ---
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Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Adam Kovari 2010-04-29 09:38:44 EDT

SELinux is preventing /usr/bin/ssh "read" access on .ssh.

Detailed Description:

[SELinux is in permissive mode. This access was not denied.]

SELinux denied access requested by ssh. It is not expected that this access is
required by ssh and this access may signal an intrusion attempt. It is also
possible that the specific version or configuration of the application is
causing it to require additional access.

Allowing Access:

You can generate a local policy module to allow this access - see FAQ
(http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385) Please file a bug

Additional Information:

Source Context                system_u:system_r:mount_t:s0
Target Context                system_u:object_r:ssh_home_t:s0
Target Objects                .ssh [ lnk_file ]
Source                        ssh
Source Path                   /usr/bin/ssh
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           openssh-clients-5.4p1-1.fc13
Target RPM Packages           
Policy RPM                    selinux-policy-3.7.19-6.fc13
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Plugin Name                   catchall
Host Name                     (removed)
Platform                      Linux (removed)
                     #1 SMP Tue Apr 20 08:57:50
                              UTC 2010 x86_64 x86_64
Alert Count                   1
First Seen                    Št 29. apríl 2010, 11:15:29 CEST
Last Seen                     Št 29. apríl 2010, 11:15:29 CEST
Local ID                      e6c89e69-5f41-41a5-b65b-ca08ac638828
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1272532529.245:6): avc:  denied  { read } for  pid=1438 comm="ssh" name=".ssh" dev=sda3 ino=43719 scontext=system_u:system_r:mount_t:s0 tcontext=system_u:object_r:ssh_home_t:s0 tclass=lnk_file

node=(removed) type=SYSCALL msg=audit(1272532529.245:6): arch=c000003e syscall=2 success=no exit=-2 a0=7fffad9fec60 a1=0 a2=1b6 a3=0 items=0 ppid=1 pid=1438 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="ssh" exe="/usr/bin/ssh" subj=system_u:system_r:mount_t:s0 key=(null)

Hash String generated from  catchall,ssh,mount_t,ssh_home_t,lnk_file,read
audit2allow suggests:

#============= mount_t ==============
allow mount_t ssh_home_t:lnk_file read;
Comment 1 Daniel Walsh 2010-04-29 10:48:32 EDT
Looks like you set up .ssh as a symbolic link somewhere which is causing this avc?
Comment 2 Adam Kovari 2010-04-29 10:51:38 EDT
lrwxrwxrwx.  1 root root    16 apr 28 18:42 .ssh -> /home/adam/.ssh/

Is that a problem?
Comment 3 Daniel Walsh 2010-04-29 14:31:55 EDT
No but that is what it is complaining about.  You can add these rules using audit2allow 

# grep ssh_home_t /var/log/audit/audit.log | audit2allow -M myssh
# semodule -i myssh.pp
Comment 4 Daniel Walsh 2010-04-29 14:32:18 EDT
Closing as not a bug since this is local customization
Comment 5 Adam Kovari 2010-04-29 15:44:49 EDT

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