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DescriptionJan Pazdziora (Red Hat)
2021-09-20 12:48:24 UTC
Description of problem:
Bug https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-28950 tracks https://access.redhat.com/security/cve/CVE-2021-28950 in fuse kernel module, making it show up on vulnerability assessment report.
Since FUSE is not part of RHEL 8 Common Criteria certification plan and the issue will be addresses only in RHEL 8.5 via rebase of fuse module to upstream 5.12 via bug 1949873, blacklisting the module in OSPP profile in RHEL 8.4 is a reasonable mitigation.
Please add a rule to OSPP profile in scap-security-guide in RHEL 8.4 to blacklist the fuse kernel module, using the standard blacklisting mechanism that the SCAP content uses.
Version-Release number of selected component (if applicable):
scap-security-guide-0.1.54-5.el8.noarch
How reproducible:
Deterministic.
Steps to Reproduce:
1. Provision RHEL 8.4 system with kickstart addon like
%addon org_fedora_oscap
content-type = scap-security-guide
profile = ospp
%end
or remediate the provisioned system with the ospp profile.
2. Try to load the fuse kernel module:
# modprobe fuse
3. Check if the module got loaded:
# lsmod | grep fuse
Actual results:
fuse 151552 1
Expected results:
No output.
Additional info:
Comment 2Jan Pazdziora (Red Hat)
2021-10-06 08:34:02 UTC
Since blacklisting the kernel module for the CVE is a mitigation and not general hardening, it should not be part of the SCAP profile.