<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor="#ffffff" text="#000000"> After some trouble getting the file-system relabelled - which was eventually solved by Daniel's suggestion to change to a 5.3 preview release of the policy packages - I now have (only) a couple of intractable denials. One seems to be related to procmail running spamc. The other seems to be webalizer being denied access to squid logs. Here is some representative troubledhooter output: <div class="moz-text-html" lang="x-unicode"> <table bgcolor="#ffffff"> <tbody> <tr> <td> <table cellpadding="1" cellspacing="1" width="100%"> <tbody> <tr bgcolor="#000000"> <td>Summary</td> </tr> <tr> <td> SELinux is preventing spamc (procmail_t) "execute" to ./spamc (spamc_exec_t). </td> </tr> <tr bgcolor="#000000"> <td>Detailed Description</td> </tr> <tr> <td>[SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.] SELinux denied access requested by spamc. It is not expected that this access is required by spamc 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. </td> </tr> <tr bgcolor="#000000"> <td>Allowing Access</td> </tr> <tr> <td> Sometimes labeling problems can cause SELinux denials. You could try to restore the default system file context for ./spamc, restorecon -v './spamc' If this does not work, there is currently no automatic way to allow this access. Instead, you can generate a local policy module to allow this access - see <a href="http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385">FAQ</a> Or you can disable SELinux protection altogether. Disabling SELinux protection is not recommended. Please file a <a href="http://bugzilla.redhat.com/bugzilla/enter_bug.cgi">bug report</a> against this package. </td> </tr> <tr bgcolor="#000000"> <td>Additional Information</td> </tr> <tr> <td> </td> </tr> </tbody> </table> <table border="0" cellpadding="1" cellspacing="1"> <tbody> <tr> <td>Source Context: </td> <td>system_u:system_r:procmail_t</td> </tr> <tr> <td>Target Context: </td> <td>system_u:object_r:spamc_exec_t</td> </tr> <tr> <td>Target Objects: </td> <td>./spamc [ file ]</td> </tr> <tr> <td>Source: </td> <td>spamc</td> </tr> <tr> <td>Source Path: </td> <td>/usr/bin/spamc</td> </tr> <tr> <td>Port: </td> <td><Unknown></td> </tr> <tr> <td>Host: </td> <td>C5.aardvark.com.au</td> </tr> <tr> <td>Source RPM Packages: </td> <td>spamassassin-3.2.4-1.el5</td> </tr> <tr> <td>Target RPM Packages: </td> <td> </td> </tr> <tr> <td>Policy RPM: </td> <td>selinux-policy-2.4.6-203.el5</td> </tr> <tr> <td>Selinux Enabled: </td> <td>True</td> </tr> <tr> <td>Policy Type: </td> <td>targeted</td> </tr> <tr> <td>MLS Enabled: </td> <td>True</td> </tr> <tr> <td>Enforcing Mode: </td> <td>Permissive</td> </tr> <tr> <td>Plugin Name: </td> <td>catchall_file</td> </tr> <tr> <td>Host Name: </td> <td>C5.aardvark.com.au</td> </tr> <tr> <td>Platform: </td> <td>Linux C5.aardvark.com.au 2.6.18-92.1.22.el5 #1 SMP Tue Dec 16 11:57:43 EST 2008 x86_64 x86_64</td> </tr> <tr> <td>Alert Count: </td> <td>199</td> </tr> <tr> <td>First Seen: </td> <td>Wed Jan 7 21:12:56 2009</td> </tr> <tr> <td>Last Seen: </td> <td>Sat Jan 10 13:50:07 2009</td> </tr> <tr> <td>Local ID: </td> <td>72201679-d161-4d2d-8423-44b1b65a211f</td> </tr> <tr> <td>Line Numbers: </td> <td> </td> </tr> </tbody> </table> Raw Audit Messages : host=C5.aardvark.com.au type=AVC msg=audit(1231563007.814:8005): avc: denied { execute } for pid=16474 comm="procmail" name="spamc" dev=dm-0 ino=31336954 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:spamc_exec_t:s0 tclass=file host=C5.aardvark.com.au type=AVC msg=audit(1231563007.814:8005): avc: denied { execute } for pid=16474 comm="procmail" name="spamc" dev=dm-0 ino=31336954 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:spamc_exec_t:s0 tclass=file host=C5.aardvark.com.au type=AVC msg=audit(1231563007.814:8005): avc: denied { execute_no_trans } for pid=16474 comm="procmail" path="/usr/bin/spamc" dev=dm-0 ino=31336954 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:spamc_exec_t:s0 tclass=file host=C5.aardvark.com.au type=AVC msg=audit(1231563007.814:8005): avc: denied { execute_no_trans } for pid=16474 comm="procmail" path="/usr/bin/spamc" dev=dm-0 ino=31336954 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:spamc_exec_t:s0 tclass=file host=C5.aardvark.com.au type=AVC msg=audit(1231563007.814:8005): avc: denied { read } for pid=16474 comm="procmail" path="/usr/bin/spamc" dev=dm-0 ino=31336954 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:spamc_exec_t:s0 tclass=file host=C5.aardvark.com.au type=AVC msg=audit(1231563007.814:8005): avc: denied { read } for pid=16474 comm="procmail" path="/usr/bin/spamc" dev=dm-0 ino=31336954 scontext=system_u:system_r:procmail_t:s0 tcontext=system_u:object_r:spamc_exec_t:s0 tclass=file host=C5.aardvark.com.au type=SYSCALL msg=audit(1231563007.814:8005): arch=c000003e syscall=59 success=yes exit=0 a0=196772e0 a1=196792a0 a2=196791f0 a3=8 items=0 ppid=16473 pid=16474 auid=4294967295 uid=500 gid=501 euid=500 suid=500 fsuid=500 egid=501 sgid=501 fsgid=501 tty=(none) ses=4294967295 comm="spamc" exe="/usr/bin/spamc" subj=system_u:system_r:procmail_t:s0 key=(null) host=C5.aardvark.com.au type=SYSCALL msg=audit(1231563007.814:8005): arch=c000003e syscall=59 success=yes exit=0 a0=196772e0 a1=196792a0 a2=196791f0 a3=8 items=0 ppid=16473 pid=16474 auid=4294967295 uid=500 gid=501 euid=500 suid=500 fsuid=500 egid=501 sgid=501 fsgid=501 tty=(none) ses=4294967295 comm="spamc" exe="/usr/bin/spamc" subj=system_u:system_r:procmail_t:s0 key=(null) </td> </tr> </tbody> </table> </div> <div class="moz-text-html" lang="x-unicode"> <table bgcolor="#ffffff"> <tbody> <tr> <td> <table cellpadding="1" cellspacing="1" width="100%"> <tbody> <tr bgcolor="#000000"> <td>Summary</td> </tr> <tr> <td> SELinux is preventing webalizer (webalizer_t) "search" to ./webalizer (bin_t). </td> </tr> <tr bgcolor="#000000"> <td>Detailed Description</td> </tr> <tr> <td>[SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.] SELinux denied access requested by webalizer. It is not expected that this access is required by webalizer 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. </td> </tr> <tr bgcolor="#000000"> <td>Allowing Access</td> </tr> <tr> <td> Sometimes labeling problems can cause SELinux denials. You could try to restore the default system file context for ./webalizer, restorecon -v './webalizer' If this does not work, there is currently no automatic way to allow this access. Instead, you can generate a local policy module to allow this access - see <a href="http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385">FAQ</a> Or you can disable SELinux protection altogether. Disabling SELinux protection is not recommended. Please file a <a href="http://bugzilla.redhat.com/bugzilla/enter_bug.cgi">bug report</a> against this package. </td> </tr> <tr bgcolor="#000000"> <td>Additional Information</td> </tr> <tr> <td> </td> </tr> </tbody> </table> <table border="0" cellpadding="1" cellspacing="1"> <tbody> <tr> <td>Source Context: </td> <td>root:system_r:webalizer_t:SystemLow-SystemHigh</td> </tr> <tr> <td>Target Context: </td> <td>system_u:object_r:bin_t</td> </tr> <tr> <td>Target Objects: </td> <td>./webalizer [ dir ]</td> </tr> <tr> <td>Source: </td> <td>webalizer</td> </tr> <tr> <td>Source Path: </td> <td>/usr/bin/webalizer</td> </tr> <tr> <td>Port: </td> <td><Unknown></td> </tr> <tr> <td>Host: </td> <td>C5.aardvark.com.au</td> </tr> <tr> <td>Source RPM Packages: </td> <td>webalizer-2.01_10-30.1</td> </tr> <tr> <td>Target RPM Packages: </td> <td> </td> </tr> <tr> <td>Policy RPM: </td> <td>selinux-policy-2.4.6-203.el5</td> </tr> <tr> <td>Selinux Enabled: </td> <td>True</td> </tr> <tr> <td>Policy Type: </td> <td>targeted</td> </tr> <tr> <td>MLS Enabled: </td> <td>True</td> </tr> <tr> <td>Enforcing Mode: </td> <td>Permissive</td> </tr> <tr> <td>Plugin Name: </td> <td>catchall_file</td> </tr> <tr> <td>Host Name: </td> <td>C5.aardvark.com.au</td> </tr> <tr> <td>Platform: </td> <td>Linux C5.aardvark.com.au 2.6.18-92.1.22.el5 #1 SMP Tue Dec 16 11:57:43 EST 2008 x86_64 x86_64</td> </tr> <tr> <td>Alert Count: </td> <td>119</td> </tr> <tr> <td>First Seen: </td> <td>Wed Jan 7 22:00:02 2009</td> </tr> <tr> <td>Last Seen: </td> <td>Sat Jan 10 14:00:01 2009</td> </tr> <tr> <td>Local ID: </td> <td>fd879861-abb1-4e67-a190-0a721c66dc0e</td> </tr> <tr> <td>Line Numbers: </td> <td> </td> </tr> </tbody> </table> Raw Audit Messages : host=C5.aardvark.com.au type=AVC msg=audit(1231563601.389:8027): avc: denied { search } for pid=16510 comm="webalizer" name="webalizer" dev=dm-0 ino=32479105 scontext=root:system_r:webalizer_t:s0-s0:c0.c1023 tcontext=system_u:object_r:bin_t:s0 tclass=dir host=C5.aardvark.com.au type=AVC msg=audit(1231563601.389:8027): avc: denied { search } for pid=16510 comm="webalizer" name="webalizer" dev=dm-0 ino=32479105 scontext=root:system_r:webalizer_t:s0-s0:c0.c1023 tcontext=system_u:object_r:bin_t:s0 tclass=dir host=C5.aardvark.com.au type=SYSCALL msg=audit(1231563601.389:8027): arch=c000003e syscall=4 success=no exit=-2 a0=4171ee a1=7fff7d310db0 a2=7fff7d310db0 a3=21000 items=0 ppid=16509 pid=16510 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=730 comm="webalizer" exe="/usr/bin/webalizer" subj=root:system_r:webalizer_t:s0-s0:c0.c1023 key=(null) host=C5.aardvark.com.au type=SYSCALL msg=audit(1231563601.389:8027): arch=c000003e syscall=4 success=no exit=-2 a0=4171ee a1=7fff7d310db0 a2=7fff7d310db0 a3=21000 items=0 ppid=16509 pid=16510 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=730 comm="webalizer" exe="/usr/bin/webalizer" subj=root:system_r:webalizer_t:s0-s0:c0.c1023 key=(null) </td> </tr> </tbody> </table> I didn't think I was doing anything unusual here - so I am surprised these aren't covered by standard policy. Am I don't something strange - and if so - do I need to write my own local policy. Is there a more standard way to run spamc and/.or webalizer which will prevent these denials? Thanks Richard. </div> </body> </html>