On 06/08/2009 04:21 PM, Antonio Olivares wrote:
Summary: SELinux is preventing firefox from changing a writable memory segment executable. Detailed Description: The firefox application attempted to change the access protection of memory (e.g., allocated using malloc). This is a potential security problem. Applications should not be doing this. 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 firefox 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: If you trust firefox to run correctly, you can change the context of the executable to unconfined_execmem_exec_t. "chcon -t unconfined_execmem_exec_t '/usr/lib/firefox-3.5b4/firefox'". 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/lib/firefox-3.5b4/firefox'" Fix Command: chcon -t unconfined_execmem_exec_t '/usr/lib/firefox-3.5b4/firefox' 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 firefox Source Path /usr/lib/firefox-3.5b4/firefox Port<Unknown> Host localhost.localdomain Source RPM Packages firefox-3.5-0.21.beta4.fc12 Target RPM Packages Policy RPM selinux-policy-3.6.13-2.fc12 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name allow_execmem Host Name localhost.localdomain Platform Linux localhost.localdomain 2.6.30-0.97.rc8.fc12.i586 #1 SMP Wed Jun 3 09:55:34 EDT 2009 i686 i686 Alert Count 8 First Seen Mon 08 Jun 2009 12:27:54 PM CDT Last Seen Mon 08 Jun 2009 12:28:08 PM CDT Local ID 0e0d62f4-09db-4ddf-987c-8210c45b9e70 Line Numbers Raw Audit Messages node=localhost.localdomain type=AVC msg=audit(1244482088.874:27316): avc: denied { execmem } for pid=2566 comm="firefox" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process node=localhost.localdomain type=SYSCALL msg=audit(1244482088.874:27316): arch=40000003 syscall=192 success=no exit=-13 a0=0 a1=2000 a2=7 a3=22 items=0 ppid=2554 pid=2566 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="firefox" exe="/usr/lib/firefox-3.5b4/firefox" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) Thanks, Antonio -- fedora-selinux-list mailing list fedora-selinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-selinux-list
Are you using flashplugin? Not sure which app is causing the execmem. Do you have nspluginwrapper installed? -- fedora-selinux-list mailing list fedora-selinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-selinux-list
