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Bug 1778919 - allow rules exist which circumvent the deny_ptrace boolean
Summary: allow rules exist which circumvent the deny_ptrace boolean
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: selinux-policy
Version: 7.8
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: 7.9
Assignee: Lukas Vrabec
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-12-02 19:29 UTC by Milos Malik
Modified: 2019-12-03 11:35 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1421075
Environment:
Last Closed: 2019-12-03 11:35:37 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description Milos Malik 2019-12-02 19:29:01 UTC
+++ This bug was initially created as a clone of Bug #1421075 +++

Description of problem:
All rules which allow the ptrace operation should be controlled via the deny_ptrace boolean.
* https://fedoraproject.org/wiki/Features/SELinuxDenyPtrace

Version-Release number of selected component (if applicable):
selinux-policy-3.13.1-266.el7.noarch
selinux-policy-devel-3.13.1-266.el7.noarch
selinux-policy-targeted-3.13.1-266.el7.noarch
selinux-policy-mls-3.13.1-266.el7.noarch
selinux-policy-minimum-3.13.1-266.el7.noarch

How reproducible:
* always

Steps to Reproduce:
# sesearch --allow -C -p ptrace | grep -v deny_ptrace | grep allow
   allow staff_t wireshark_t : process { transition sigchld sigkill sigstop signull signal ptrace getattr } ; 
   allow sysadm_t wireshark_t : process { transition sigchld sigkill sigstop signull signal ptrace getattr } ;
#

Actual results:
* the output of above-mentioned command contains 2 allow rules

Expected results:
* the output of above-mentioned command is empty

Comment 2 Lukas Vrabec 2019-12-03 11:35:37 UTC
This issue was not selected to be included in Red Hat Enterprise Linux 7 because it is seen either as low or moderate impact to a small number of use-cases. Red Hat Enterprise Linux 7 is in Maintenance Support 1 Phase, which means that qualified Critical and Important Security errata advisories (RHSAs) and Urgent Priority Bug Fix errata advisories (RHBAs) may be released as they become available.

We will now close this issue, but if you believe that it qualifies for the Maintenance Support 1 Phase, please re-open; otherwise, we recommend moving the request to Red Hat Enterprise Linux 8 if applicable.


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