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Bug
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Resolution: Done-Errata
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Normal
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rhel-9.2.0
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fapolicyd-1.3.2-100.el9
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None
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Moderate
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rhel-sst-security-special-projects
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20
-
None
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False
-
-
Yes
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None
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- removing a file from the trustdb has immediate effect without the service restart
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Pass
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None
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Bug Fix
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Done
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All
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None
+++ This bug was initially created as a clone of Bug #2181472 +++
Description of problem:
Removing a program from trust database, then reloading fapolicyd, has no effect. The program can still execute, until fapolicyd is restarted, as shown in the example below:
Sample program:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
[user@vm-fapolicy8 ~]$ cat > hello.c << EOF
#include <stdio.h>
int main(int argc, char *argv[])
{
printf("Hello!\n");
return 0;
}
EOF
[user@vm-fapolicy8 ~]$ gcc -o hello hello.c
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Program initially untrusted:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
[user@vm-fapolicy8 ~]$ ./hello
-bash: ./hello: Operation not permitted
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Trusting the program:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
[root@vm-fapolicy8 ~]# fapolicyd-cli -f add /home/user/hello
[root@vm-fapolicy8 ~]# fapolicyd-cli -u
Fapolicyd was notified
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Program now trusted:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
[user@vm-fapolicy8 ~]$ ./hello
Hello!
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Untrusting the program:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
[root@vm-fapolicy8 ~]# fapolicyd-cli -f delete /home/user/hello
[root@vm-fapolicy8 ~]# fapolicyd-cli -u
Fapolicyd was notified
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Program untrusted again: (STILL EXECUTES!)
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
[user@vm-fapolicy8 ~]$ ./hello
Hello!
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Looks like a cache issue.
Version-Release number of selected component (if applicable):
fapolicyd-1.1.3-8.el8_7.1.x86_64
How reproducible:
Always, see above.
— Additional comment from Renaud Métrich on 2023-03-24 13:56:50 UTC —
I checked with "integrity = sha256", this doesn't help (just in case this was related to BZ #2181544).
— Additional comment from Radovan Sroka on 2023-03-24 14:08:38 UTC —
(In reply to Renaud Métrich from comment #1)
> I checked with "integrity = sha256", this doesn't help (just in case this
> was related to BZ #2181544).
This is basically duplicate of BZ #2179701. Different symptoms but the same source. I want to keep both bugzillas open for now.
Acceptance Criteria:
- removing a file from the trustdb has immediate effect without the service restart
- is blocked by
-
RHEL-630 fapolicyd still allows execution of a program after "untrusting" it
- Closed
- external trackers