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Antonio Olivares wrote:
Dear all,
Upon applying todays updates rawhide report 20080205, and the failed update/conflicts \begin{QUOTE} xorg-x11-xinit-1.0.7-3.fc9.i386 from development has depsolving problems --> xorg-x11-xinit-1.0.7-3.fc9.i386 (development) conflicts with dbus < 1.1 .4-3.fc9 Error: xorg-x11-xinit-1.0.7-3.fc9.i386 (development) conflicts with dbus < 1. 1.4-3.fc9 \end{QUOTE}
I get two denials from selinux
Summary:
SELinux is preventing nspluginscan from making the program stack executable.
Detailed Description:
The nspluginscan application attempted to make its stack executable. This is a potential security problem. This should never ever be necessary. Stack memory is not executable on most OSes these days and this will not change. Executable stack memory is one of the biggest security problems. An execstack error might in fact be most likely raised by malicious code. Applications are sometimes coded incorrectly and request this permission. The SELinux Memory Protection Tests (http://people.redhat.com/drepper/selinux-mem.html) web page explains how to remove this requirement. If nspluginscan does not work and you need it to work, you can configure SELinux temporarily to allow this access until the application is fixed. Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.
Allowing Access:
Sometimes a library is accidentally marked with the execstack flag, if you find a library with this flag you can clear it with the execstack -c LIBRARY_PATH. Then retry your application. If the app continues to not work, you can turn the flag back on with execstack -s LIBRARY_PATH. Otherwise, if you trust nspluginscan to run correctly, you can change the context of the executable to unconfined_execmem_exec_t. "chcon -t unconfined_execmem_exec_t '/usr/bin/nspluginscan'" You must also change the default file context files on the system in order to preserve them even on a full relabel. "semanage fcontext -a -t unconfined_execmem_exec_t '/usr/bin/nspluginscan'"
The following command will allow this access:
chcon -t unconfined_execmem_exec_t '/usr/bin/nspluginscan'
Additional Information:
Source Context unconfined_u:unconfined_r:unconfined_t:SystemLow- SystemHigh Target Context unconfined_u:unconfined_r:unconfined_t:SystemLow- SystemHigh Target Objects None [ process ] Source nspluginscan Source Path /usr/bin/nspluginscan Port <Unknown> Host localhost.localdomain Source RPM Packages kdebase-4.0.1-3.fc9 Target RPM Packages Policy RPM selinux-policy-3.2.6-5.fc9 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name allow_execstack Host Name localhost.localdomain Platform Linux localhost.localdomain 2.6.24-17.fc9 #1 SMP Mon Feb 4 19:02:27 EST 2008 i686 i686 Alert Count 2 First Seen Tue 05 Feb 2008 07:13:02 AM CST Last Seen Tue 05 Feb 2008 07:41:42 PM CST Local ID 7afb3a36-5b69-486c-a93b-02e714040250 Line Numbers
Raw Audit Messages
host=localhost.localdomain type=AVC msg=audit(1202262102.930:20): avc: denied { execstack } for pid=2866 comm="nspluginscan" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process
host=localhost.localdomain type=SYSCALL msg=audit(1202262102.930:20): arch=40000003 syscall=125 success=no exit=-13 a0=bfce4000 a1=1000 a2=1000007 a3=fffff000 items=0 ppid=2855 pid=2866 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) comm="nspluginscan" exe="/usr/bin/nspluginscan" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
Summary:
SELinux is preventing the 00-netreport (NetworkManager_t) from executing ./init.
Detailed Description:
SELinux has denied the 00-netreport from executing ./init. If 00-netreport is supposed to be able to execute ./init, this could be a labeling problem. Most confined domains are allowed to execute files labeled bin_t. So you could change the labeling on this file to bin_t and retry the application. If this 00-netreport is not supposed to execute ./init, this could signal a intrusion attempt.
Allowing Access:
If you want to allow 00-netreport to execute ./init: chcon -t bin_t './init' If this fix works, please update the file context on disk, with the following command: semanage fcontext -a -t bin_t './init' Please specify the full path to the executable, Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this selinux-policy to make sure this becomes the default labeling.
Additional Information:
Source Context system_u:system_r:NetworkManager_t Target Context system_u:object_r:etc_t Target Objects ./init [ file ] Source 00-netreport Source Path /bin/bash Port <Unknown> Host localhost.localdomain Source RPM Packages bash-3.2-20.fc9 Target RPM Packages Policy RPM selinux-policy-3.2.6-5.fc9 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name execute Host Name localhost.localdomain Platform Linux localhost.localdomain 2.6.24-17.fc9 #1 SMP Mon Feb 4 19:02:27 EST 2008 i686 i686 Alert Count 1 First Seen Tue 05 Feb 2008 07:42:33 PM CST Last Seen Tue 05 Feb 2008 07:42:33 PM CST Local ID 9a1f71bd-9256-450a-bc0c-a7ebb115cacb Line Numbers
Raw Audit Messages
host=localhost.localdomain type=AVC msg=audit(1202262153.640:107): avc: denied { execute } for pid=3226 comm="00-netreport" name="init" dev=dm-0 ino=360497 scontext=system_u:system_r:NetworkManager_t:s0 tcontext=system_u:object_r:etc_t:s0 tclass=file
host=localhost.localdomain type=SYSCALL msg=audit(1202262153.640:107): arch=40000003 syscall=33 success=no exit=-13 a0=9f7a370 a1=1 a2=11 a3=9f7a370 items=0 ppid=2385 pid=3226 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="00-netreport" exe="/bin/bash" subj=system_u:system_r:NetworkManager_t:s0 key=(null)
Thanks,
Antonio
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The 00-netreport should be fixed in todays update.
nspluginscan requiring execstack should be reported as a bug against nsplugin