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Bug 2138082 - fapolicyd not creating audit events with deny_audit rules
Summary: fapolicyd not creating audit events with deny_audit rules
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: fapolicyd
Version: unspecified
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Radovan Sroka
QA Contact: BaseOS QE Security Team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-10-27 06:51 UTC by Daniel Reynolds
Modified: 2022-11-14 12:47 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-11-14 12:47:46 UTC
Type: Bug
Target Upstream Version:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-137711 0 None None None 2022-10-27 07:28:54 UTC
Red Hat Issue Tracker SECENGSP-4855 0 None None None 2022-10-27 07:28:57 UTC

Description Daniel Reynolds 2022-10-27 06:51:30 UTC 
Description of problem:
fapolicyd not creating audit events with deny_audit rules

Version-Release number of selected component (if applicable):
- audit-3.0.7-101.el9_0.2.x86_64
- fapolicyd-1.1-103.el9_0.1.x86_64
- Red Hat Enterprise Linux release 9.0 (Plow)

How reproducible: always


Steps to Reproduce:
1. Install and enable fapolicyd

    # sudo dnf install fapolicyd
    # sudo systemctl start fapolicyd
    # sudo systemctl enable fapolicyd

2. Confirm deny rules are 'deny_audit'.

    $ sudo fapolicyd-cli --list
    -> %languages=application/x-bytecode.ocaml,application/x-bytecode.python,application/java-archive,text/x-java,application/x-java-applet,application/javascript,text/javascript,text/x-awk,text/x-gawk,text/x-lisp,application/x-elc,text/x-lua,text/x-m4,text/x-nftables,text/x-perl,text/x-php,text/x-python,text/x-R,text/x-ruby,text/x-script.guile,text/x-tcl,text/x-luatex,text/x-systemtap
    1. allow perm=any uid=0 : dir=/var/tmp/
    2. allow perm=any uid=0 trust=1 : all
    3. allow perm=open exe=/usr/bin/rpm : all
    4. allow perm=open exe=/usr/bin/python3.9 comm=dnf : all
    5. deny_audit perm=any pattern=ld_so : all
    6. deny_audit perm=any all : ftype=application/x-bad-elf
    7. allow perm=open all : ftype=application/x-sharedlib trust=1
    8. deny_audit perm=open all : ftype=application/x-sharedlib
    9. allow perm=execute all : trust=1
    10. allow perm=open all : ftype=%languages trust=1
    11. deny_audit perm=any all : ftype=%languages
    12. allow perm=any all : ftype=text/x-shellscript
    13. deny_audit perm=execute all : all
    14. allow perm=open all : all

3. Create an unauthorised executable.

    cp /usr/bin/ls /tmp/ls

4. Run the following as non root user.

    $ while :; do sleep 1; /tmp/ls; done
    bash: /tmp/ls: Operation not permitted
    bash: /tmp/ls: Operation not permitted
    ...

Actual results:

    On inspection no audit messages are generated that match denies.


Expected results:

    Audit messages are generated for denies.

Additional info:
- This case is raised for a Red Hat Consultant.
- Consultant and project will be appended in a private comment.
Comment 2 Daniel Reynolds 2022-10-27 06:57:43 UTC 
The original case is for RHEL 9 Edge.  I have reproduced this on RHEL 9.  If I need to raise another BZ for RHEL9 Edge, please let me know.
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