Bug 573565
| Summary: | SELinux prevented boinc_client from reading from the urandom device. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Vaclav "sHINOBI" Misek <misek> |
| Component: | selinux-policy | Assignee: | Daniel Walsh <dwalsh> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 13 | CC: | dwalsh, mgrepl, misek |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | setroubleshoot_trace_hash:1bcd7f49140f46948a97491037c577ccc8437ed0b98b5fd1cbc2265de62cff1d | ||
| Fixed In Version: | selinux-policy-3.7.15-4.fc13 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2010-03-25 22:30:00 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Vaclav, which projects are you running? The active ones: Seti@home, Cosmology@home, Einstein@home, Milkyway@home, World Community Grid No tasks: orbit@home, lhcathome, boincsimap Currently inactive at my machine: QMC@Home, Rosetta@home Uff quite a long list :-). BTW I noticed after bootup Seti@home and Einstein@home were running tasks. Fixed in selinux-policy-3.7.15-4.fc13.noarch selinux-policy-3.7.15-4.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/selinux-policy-3.7.15-4.fc13 selinux-policy-3.7.15-4.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: http://admin.fedoraproject.org/updates/selinux-policy-3.7.15-4.fc13 selinux-policy-3.7.15-4.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 prevented boinc_client from reading from the urandom device. Detailed Description: [boinc_client has a permissive type (boinc_t). This access was not denied.] SELinux prevented boinc_client from reading from the urandom device. This access should be allowed for individual applications, but there are situations where all applications require the access (for example, when ProPolice/SSP stack smashing protection is used). Allowing this access may allow malicious applications to drain the kernel entropy pool. This can compromise the ability of some software that is dependent on high quality random numbers (e.g., ssh-keygen) to operate effectively. The risk of this type of attack is relatively low. Allowing Access: Changing the "global_ssp" boolean to true will allow this access: "setsebool -P global_ssp=1." Fix Command: setsebool -P global_ssp=1 Additional Information: Source Context system_u:system_r:boinc_t:SystemLow Target Context system_u:object_r:urandom_device_t:SystemLow Target Objects urandom [ chr_file ] Source boinc_client Source Path /usr/bin/boinc_client Port <Unknown> Host (removed) Source RPM Packages boinc-client-6.10.36-1.r20845svn.fc13 Target RPM Packages Policy RPM selinux-policy-3.7.14-3.fc13 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Plugin Name global_ssp Host Name (removed) Platform Linux (removed) 2.6.33-1.fc13.x86_64 #1 SMP Wed Feb 24 19:55:32 UTC 2010 x86_64 x86_64 Alert Count 2 First Seen Mon 15 Mar 2010 07:54:27 AM CET Last Seen Mon 15 Mar 2010 07:54:27 AM CET Local ID eafd7511-beda-48cb-a083-d795551c821c Line Numbers Raw Audit Messages node=(removed) type=AVC msg=audit(1268636067.752:41467): avc: denied { read } for pid=2010 comm="boinc_client" name="urandom" dev=devtmpfs ino=4030 scontext=system_u:system_r:boinc_t:s0 tcontext=system_u:object_r:urandom_device_t:s0 tclass=chr_file node=(removed) type=AVC msg=audit(1268636067.752:41467): avc: denied { open } for pid=2010 comm="boinc_client" name="urandom" dev=devtmpfs ino=4030 scontext=system_u:system_r:boinc_t:s0 tcontext=system_u:object_r:urandom_device_t:s0 tclass=chr_file node=(removed) type=SYSCALL msg=audit(1268636067.752:41467): arch=c000003e syscall=2 success=yes exit=10 a0=30dd60bd82 a1=0 a2=1b6 a3=0 items=0 ppid=1 pid=2010 auid=4294967295 uid=495 gid=491 euid=495 suid=495 fsuid=495 egid=491 sgid=491 fsgid=491 tty=(none) ses=4294967295 comm="boinc_client" exe="/usr/bin/boinc_client" subj=system_u:system_r:boinc_t:s0 key=(null) Hash String generated from global_ssp,boinc_client,boinc_t,urandom_device_t,chr_file,read audit2allow suggests: #============= boinc_t ============== #!!!! This avc can be allowed using the boolean 'global_ssp' allow boinc_t urandom_device_t:chr_file { read open };