Bug 1264938
| Summary: | SELinux is preventing /usr/sbin/postdrop from write access on the file /tmp/logcheck.debug | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Brian J. Murrell <brian> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED NOTABUG | QA Contact: | Milos Malik <mmalik> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.1 | CC: | brian, lvrabec, mgrepl, mmalik, plautrba, pvrabec, ssekidde |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-10-01 09:13:32 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Could you describe your steps to reproduce it? Interesting that you should make me want to audit what I have done. I did add some debugging to /usr/sbin/logcheck which was probably causing this. I have disabled that and we will see if it goes away. ~waits~ So yes, removing that debugging hook fixed it. I guess I didn't think about this debugging that I added immediately because SELinux was saying that it was postdrop trying to access the debugging file when of course it was logcheck that I added the file do. Didn't draw the (strange) connection. AVC shows me there is probably a redirection and I don't see why postdrop should access /tmp/logcheck.debug in a common configuration. This is a reason why I asked you for more details. Thank you. |
SELinux is preventing /usr/sbin/postdrop from write access on the file /tmp/logcheck.debug. ***** Plugin leaks (86.2 confidence) suggests ***************************** If you want to ignore postdrop trying to write access the logcheck.debug file, because you believe it should not need this access. Then you should report this as a bug. You can generate a local policy module to dontaudit this access. Do # grep /usr/sbin/postdrop /var/log/audit/audit.log | audit2allow -D -M mypol # semodule -i mypol.pp ***** Plugin catchall (14.7 confidence) suggests ************************** If you believe that postdrop should be allowed write access on the logcheck.debug file by default. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # grep postdrop /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:postfix_postdrop_t:s0-s0:c0.c102 3 Target Context system_u:object_r:logwatch_tmp_t:s0 Target Objects /tmp/logcheck.debug [ file ] Source postdrop Source Path /usr/sbin/postdrop Port <Unknown> Host server.interlinx.bc.ca Source RPM Packages postfix-2.10.1-6.el7.x86_64 Target RPM Packages Policy RPM selinux-policy-3.13.1-23.el7_1.17.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name server.interlinx.bc.ca Platform Linux server.interlinx.bc.ca 3.10.0-229.11.1.el7.x86_64 #1 SMP Thu Aug 6 01:06:18 UTC 2015 x86_64 x86_64 Alert Count 29 First Seen 2015-09-17 05:20:07 EDT Last Seen 2015-09-21 12:02:56 EDT Local ID de291460-8d3b-4a9a-a763-78b123f6db5a Raw Audit Messages type=AVC msg=audit(1442851376.473:13157): avc: denied { write } for pid=20139 comm="postdrop" path="/tmp/logcheck.debug" dev="dm-4" ino=65069 scontext=system_u:system_r:postfix_postdrop_t:s0-s0:c0.c1023 tcontext=system_u:object_r:logwatch_tmp_t:s0 tclass=file type=SYSCALL msg=audit(1442851376.473:13157): arch=x86_64 syscall=execve success=yes exit=0 a0=7f164703d370 a1=7f164703d3a0 a2=7f164703c290 a3=fe items=0 ppid=20138 pid=20139 auid=993 uid=993 gid=991 euid=993 suid=993 fsuid=993 egid=90 sgid=90 fsgid=90 tty=(none) ses=171 comm=postdrop exe=/usr/sbin/postdrop subj=system_u:system_r:postfix_postdrop_t:s0-s0:c0.c1023 key=(null) Hash: postdrop,postfix_postdrop_t,logwatch_tmp_t,file,write