| Summary: | SELinux is preventing /usr/lib/firefox-3.6/firefox from loading /home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so which requires text relocation. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Walt <waltsaw> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 13 | CC: | dwalsh, mgrepl, waltsaw |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | setroubleshoot_trace_hash:a0cd28d5847284a9d7ec63e6225d7e48aac6891b4b02aa2886600d6788108406 | ||
| Fixed In Version: | selinux-policy-3.7.19-89.fc13 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-03-17 18:48:50 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
If you are going to download untrusted content to your homedir and allow it to execmod Miroslav add tunable_policy(`allow_execmod',` userdom_execmod_user_home_files(staff_usertype) ') and tunable_policy(`allow_execmod',` userdom_execmod_user_home_files(user_usertype) ') To F13/F14 policy staff.te and unprivuser.te Walt for now you can mark this libary as textrel_shlib_t so it will work. Otherwise you will have to set the allow_execmod boolean. Fixed in selinux-policy-3.7.19-87.fc13. selinux-policy-3.7.19-89.fc13 has been submitted as an update for Fedora 13. https://admin.fedoraproject.org/updates/selinux-policy-3.7.19-89.fc13 selinux-policy-3.7.19-89.fc13 has been pushed to the Fedora 13 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update selinux-policy'. You can provide feedback for this update here: https://admin.fedoraproject.org/updates/selinux-policy-3.7.19-89.fc13 selinux-policy-3.7.19-89.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report. |
Summary: SELinux is preventing /usr/lib/firefox-3.6/firefox from loading /home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so which requires text relocation. Detailed Description: The firefox application attempted to load /home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so which requires text relocation. This is a potential security problem. Most libraries do not need this permission. Libraries are sometimes coded incorrectly and request this permission. The SELinux Memory Protection Tests (http://www.akkadia.org/drepper/selinux-mem.html) web page explains how to remove this requirement. You can configure SELinux temporarily to allow /home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so to use relocation as a workaround, until the library is fixed. Please file a bug report. Allowing Access: If you trust /home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so to run correctly, you can change the file context to textrel_shlib_t. "chcon -t textrel_shlib_t '/home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so'" 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 textrel_shlib_t '/home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so'" Fix Command: chcon -t textrel_shlib_t '/home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so' Additional Information: Source Context user_u:user_r:user_t:s0 Target Context unconfined_u:object_r:mozilla_home_t:s0 Target Objects /home/walt/.mozilla/firefox/5q01kurs.default/exten sions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platf orm/Linux/components/ColorZilla.so [ file ] Source firefox Source Path /usr/lib/firefox-3.6/firefox Port <Unknown> Host (removed) Source RPM Packages firefox-3.6.13-1.fc13 Target RPM Packages Policy RPM selinux-policy-3.7.19-76.fc13 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Plugin Name allow_execmod Host Name (removed) Platform Linux (removed) 2.6.34.7-66.fc13.i686 #1 SMP Wed Dec 15 07:40:25 UTC 2010 i686 i686 Alert Count 10 First Seen Mon 03 Jan 2011 09:52:41 AM EST Last Seen Sun 16 Jan 2011 09:55:43 PM EST Local ID ddc75066-b211-4def-ab96-7fa70b9bbf78 Line Numbers Raw Audit Messages node=(removed) type=AVC msg=audit(1295232943.395:105225): avc: denied { execmod } for pid=6315 comm="firefox" path="/home/walt/.mozilla/firefox/5q01kurs.default/extensions/{6AC85730-7D0F-4de0-B3FA-21142DD85326}/platform/Linux/components/ColorZilla.so" dev=dm-0 ino=2098387 scontext=user_u:user_r:user_t:s0 tcontext=unconfined_u:object_r:mozilla_home_t:s0 tclass=file node=(removed) type=SYSCALL msg=audit(1295232943.395:105225): arch=40000003 syscall=125 success=no exit=-13 a0=639000 a1=3000 a2=5 a3=bf979b50 items=0 ppid=6298 pid=6315 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-3.6/firefox" subj=user_u:user_r:user_t:s0 key=(null) Hash String generated from allow_execmod,firefox,user_t,mozilla_home_t,file,execmod audit2allow suggests: #============= user_t ============== allow user_t mozilla_home_t:file execmod;