I have a web application which uses sudo to invoke python scripts as the user under which the application runs (NO root access). Is there any reason why sudo would would require sys_ptrace access for this? I only get this violation intermittenly, and not with every call to sudo. Here's the violation:
Summary:
SELinux is preventing sudo (httpd_t) "sys_ptrace" to <Unknown> (httpd_t).
Detailed Description:
SELinux denied access requested by sudo. It is not expected that this access is required by sudo and this access may signal an intrusion attempt. It is also possible that the specific version or configuration of the application is causing it to require additional access.
Allowing Access:
You can generate a local policy module to allow this access - see FAQ (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can disable SELinux protection altogether. Disabling SELinux protection is not recommended. Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.
Additional Information:
Source Context system_u:system_r:httpd_t Target Context system_u:system_r:httpd_t Target Objects None [ capability ] Source sudo Source Path /usr/bin/sudo Port <Unknown> Host myhost.mydomain.com Source RPM Packages sudo-1.7.2p1-29.el5_10 Target RPM Packages Policy RPM selinux-policy-2.4.6-351.el5 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall Host Name myhost.mydomain.com Platform Linux myhost.mydomain.com 2.6.18-419.el5 #1 SMP Fri Feb 24 22:06:09 UTC 2017 i686 i686 Alert Count 359 First Seen Tue Oct 8 09:24:50 2013 Last Seen Tue Aug 21 10:26:26 2018 Local ID 717eb9a4-cc7f-4ed1-b638-5db1a841abe4 Line Numbers
Raw Audit Messages
host=myhost.mydomain.com type=AVC msg=audit(1534872386.726:9642): avc: denied { sys_ptrace } for pid=8458 comm="sudo" capability=19 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:system_r:httpd_t:s0 tclass=capability
host=myhost.mydomain.com type=SYSCALL msg=audit(1534872386.726:9642): arch=40000003 syscall=3 success=yes exit=166 a0=1a a1=b7ff4000 a2=400 a3=89cabf0 items=0 ppid=8979 pid=8458 auid=4294967295 uid=48 gid=48 euid=0 suid=0 fsuid=0 egid=48 sgid=48 fsgid=48 tty=(none) ses=4294967295 comm="sudo" exe="/usr/bin/sudo" subj=system_u:system_r:httpd_t:s0 key=(null)
Thank You,
Nataraj