https://bugzilla.redhat.com/show_bug.cgi?id=522917 Summary: SELinux is preventing /usr/lib/firefox-3.5.3/firefox from changing a writable memory segment executable. Detailed Description: [firefox has a permissive type (unconfined_t). This access was not denied.] 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 against this package. Allowing Access: If you trust firefox to run correctly, you can change the context of the executable to execmem_exec_t. "chcon -t execmem_exec_t '/usr/lib/firefox-3.5.3/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 execmem_exec_t '/usr/lib/firefox-3.5.3/firefox'" Fix Command: chcon -t execmem_exec_t '/usr/lib/firefox-3.5.3/firefox' Additional Information: Source Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1 023 Target Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1 023 Target Objects None [ process ] Source firefox Source Path /usr/lib/firefox-3.5.3/firefox Port <Unknown> Host (removed) Source RPM Packages firefox-3.5.3-1.fc12 Target RPM Packages Policy RPM selinux-policy-3.6.31-3.fc12 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name allow_execmem Host Name (removed) Platform Linux localhost.localdomain 2.6.31-2.fc12.i686 #1 SMP Thu Sep 10 00:41:03 EDT 2009 i686 i686 Alert Count 1 First Seen Sun 13 Sep 2009 11:47:14 AM CDT Last Seen Sun 13 Sep 2009 11:47:14 AM CDT Local ID 1c10f973-7768-4807-9482-d77739f533a2 Line Numbers Raw Audit Messages node=localhost.localdomain type=AVC msg=audit(1252860434.198:37): avc: denied { execmem } for pid=1910 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(1252860434.198:37): arch=40000003 syscall=192 success=yes exit=1601536 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=1898 pid=1910 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-3.5.3/firefox" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) Regards, Antonio -- fedora-selinux-list mailing list fedora-selinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-selinux-list
