DescriptionChristopher Meng
2013-09-17 08:00:35 UTC
Description of problem:
SELinux is preventing /usr/libexec/deja-dup/deja-dup-monitor from 'mmap_zero' accesses on the memprotect .
***** Plugin mmap_zero (53.1 confidence) suggests *************************
If you do not think /usr/libexec/deja-dup/deja-dup-monitor should need to mmap low memory in the kernel.
Then you may be under attack by a hacker, this is a very dangerous access.
Do
contact your security administrator and report this issue.
***** Plugin catchall_boolean (42.6 confidence) suggests ******************
If you want to control the ability to mmap a low area of the address space, as configured by /proc/sys/kernel/mmap_min_addr.
Then you must tell SELinux about this by enabling the 'mmap_low_allowed' boolean.
You can read 'unconfined_selinux' man page for more details.
Do
setsebool -P mmap_low_allowed 1
***** Plugin catchall (5.76 confidence) suggests **************************
If you believe that deja-dup-monitor should be allowed mmap_zero access on the memprotect 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 64636F6E6620776F726B6572 /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp
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 [ memprotect ]
Source 64636F6E6620776F726B6572
Source Path /usr/libexec/deja-dup/deja-dup-monitor
Port <Unknown>
Host (removed)
Source RPM Packages deja-dup-27.3.1-2.fc20.i686
Target RPM Packages
Policy RPM selinux-policy-3.12.1-80.fc21.noarch
Selinux Enabled True
Policy Type targeted
Enforcing Mode Enforcing
Host Name (removed)
Platform Linux (removed) 3.12.0-0.rc0.git19.2.fc21.i686 #1
SMP Wed Sep 11 12:50:53 UTC 2013 i686 i686
Alert Count 20
First Seen 2013-09-17 13:45:58 CST
Last Seen 2013-09-17 13:51:36 CST
Local ID adc91271-ae56-421d-b490-6b93905a6d83
Raw Audit Messages
type=AVC msg=audit(1379397096.26:21591): avc: denied { mmap_zero } for pid=1414 comm=64636F6E6620776F726B6572 scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=memprotect
type=SYSCALL msg=audit(1379397096.26:21591): arch=i386 syscall=mmap2 success=no exit=EACCES a0=0 a1=1000 a2=3 a3=22 items=0 ppid=1252 pid=1414 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 fsgid=1000 ses=1 tty=(none) comm=64636F6E6620776F726B6572 exe=/usr/libexec/deja-dup/deja-dup-monitor subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
Hash: 64636F6E6620776F726B6572,unconfined_t,unconfined_t,memprotect,mmap_zero
Additional info:
reporter: libreport-2.1.7
hashmarkername: setroubleshoot
kernel: 3.12.0-0.rc0.git19.2.fc21.i686
type: libreport
Description of problem: SELinux is preventing /usr/libexec/deja-dup/deja-dup-monitor from 'mmap_zero' accesses on the memprotect . ***** Plugin mmap_zero (53.1 confidence) suggests ************************* If you do not think /usr/libexec/deja-dup/deja-dup-monitor should need to mmap low memory in the kernel. Then you may be under attack by a hacker, this is a very dangerous access. Do contact your security administrator and report this issue. ***** Plugin catchall_boolean (42.6 confidence) suggests ****************** If you want to control the ability to mmap a low area of the address space, as configured by /proc/sys/kernel/mmap_min_addr. Then you must tell SELinux about this by enabling the 'mmap_low_allowed' boolean. You can read 'unconfined_selinux' man page for more details. Do setsebool -P mmap_low_allowed 1 ***** Plugin catchall (5.76 confidence) suggests ************************** If you believe that deja-dup-monitor should be allowed mmap_zero access on the memprotect 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 64636F6E6620776F726B6572 /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp 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 [ memprotect ] Source 64636F6E6620776F726B6572 Source Path /usr/libexec/deja-dup/deja-dup-monitor Port <Unknown> Host (removed) Source RPM Packages deja-dup-27.3.1-2.fc20.i686 Target RPM Packages Policy RPM selinux-policy-3.12.1-80.fc21.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 3.12.0-0.rc0.git19.2.fc21.i686 #1 SMP Wed Sep 11 12:50:53 UTC 2013 i686 i686 Alert Count 20 First Seen 2013-09-17 13:45:58 CST Last Seen 2013-09-17 13:51:36 CST Local ID adc91271-ae56-421d-b490-6b93905a6d83 Raw Audit Messages type=AVC msg=audit(1379397096.26:21591): avc: denied { mmap_zero } for pid=1414 comm=64636F6E6620776F726B6572 scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=memprotect type=SYSCALL msg=audit(1379397096.26:21591): arch=i386 syscall=mmap2 success=no exit=EACCES a0=0 a1=1000 a2=3 a3=22 items=0 ppid=1252 pid=1414 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 fsgid=1000 ses=1 tty=(none) comm=64636F6E6620776F726B6572 exe=/usr/libexec/deja-dup/deja-dup-monitor subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) Hash: 64636F6E6620776F726B6572,unconfined_t,unconfined_t,memprotect,mmap_zero Additional info: reporter: libreport-2.1.7 hashmarkername: setroubleshoot kernel: 3.12.0-0.rc0.git19.2.fc21.i686 type: libreport