Histórico:
Eu tenho dois servidores CentOS7. Test & Prod .
Existe um script myfilename.sh no meu site, que é executado em php por shell_exec .
Script e todas as pastas pai em ambos os servidores têm contexto selinux idêntico. httpd_sys_rw_content_t
Descrição do problema:
Script é executado corretamente em Test server, mas não funciona em Prod .
Log de auditoria em Prod diz SELinux is preventing /usr/bin/bash from execute access on the file myfilename.sh. , mas nada aparece em Test box.
Qualquer ideia do que poderia ter corrido mal e porque o script está funcionando em Test box. Preciso reproduzir o problema no servidor Test antes de corrigi-lo no prod.
Aqui está o log de auditoria:
SELinux is preventing /usr/bin/bash from execute access on the file myfilename.sh.
***** Plugin catchall (100. confidence) suggests **************************
If you believe that bash should be allowed execute access on the myfilename.sh 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:
# ausearch -c 'sh' --raw | audit2allow -M my-sh
# semodule -i my-sh.pp
Additional Information:
Source Context system_u:system_r:httpd_sys_script_t:s0
Target Context unconfined_u:object_r:httpd_sys_rw_content_t:s0
Target Objects myfilename.sh [ file ]
Source sh
Source Path /usr/bin/bash
Port <Unknown>
Host <Unknown>
Source RPM Packages bash-4.2.46-21.el7_3.x86_64
Target RPM Packages
Policy RPM selinux-policy-3.13.1-102.el7_3.16.noarch
Selinux Enabled True
Policy Type targeted
Enforcing Mode Enforcing
Host Name ip-X-X-X-X
Platform Linux ip-X-X-X-X 3.10.0-327.10.1.el7.x86_64
#1 SMP Tue Feb 16 17:03:50 UTC 2016 x86_64 x86_64
Alert Count 23
First Seen 2017-06-17 06:33:36 CDT
Last Seen 2017-06-18 02:18:01 CDT
Local ID 340158ca-61f6-4472-aadb-18a3bbc34a22
Raw Audit Messages
type=AVC msg=audit(1497770281.465:12508): avc: denied { execute } for pid=10042 comm="sh" name="myfilename.sh" dev="xvdc" ino=3416830 scontext=system_u:system_r:httpd_sys_script_t:s0 tcontext=unconfined_u:object_r:httpd_sys_rw_content_t:s0 tclass=file
type=SYSCALL msg=audit(1497770281.465:12508): arch=x86_64 syscall=execve success=no exit=EACCES a0=20d5650 a1=20d5730 a2=20d3c20 a3=7ffe9f4d7de0 items=0 ppid=10041 pid=10042 auid=4294967295 uid=995 gid=992 euid=995 suid=995 fsuid=995 egid=992 sgid=992 fsgid=992 tty=(none) ses=4294967295 comm=sh exe=/usr/bin/bash subj=system_u:system_r:httpd_sys_script_t:s0 key=(null)
Hash: sh,httpd_sys_script_t,httpd_sys_rw_content_t,file,execute
Tags selinux