Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
DescriptionDalibor Pospíšil
2022-06-13 21:46:35 UTC
+++ This bug was initially created as a clone of Bug #2084497 +++
Fapolicyd does not appear to maintain a complete execution state machine spanning the execution of statically linked executables, and the subsequent execution of further executables by such processes. As a result, fapolicyd does not always update the exe path for a process when the process performing the execve(2)/execveat(2) syscall is statically linked. This may result in rule bypasses due to the wrong subject being applied.
Reproducer(simplified):
- two static apps
- first one in trusted
- the first one executed the second one
- the second one should be blocked
- All of the second app’s attributes (as seen in debug mode or syslog) should match it and not it’s parent: exe, comm, pid, etc.
ACs:
* fapolicyd correctly blocks untrusted apps executed via a trusted statically linked app
* all trusted apps are allowed
* all untrusted apps are denied
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (fapolicyd bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:8236