Bug 1942872
| Summary: | SELinux prevents arpwatch from creating netlink generic sockets | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Milos Malik <mmalik> |
| Component: | selinux-policy | Assignee: | Zdenek Pytela <zpytela> |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 34 | CC: | dwalsh, grepl.miroslav, lvrabec, mmalik, omosnace, plautrba, vmojzis, zpytela |
| Target Milestone: | --- | Keywords: | Triaged |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.14.7-28.fc34 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-03-29 00:17:11 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Caught in permissive mode:
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type=PROCTITLE msg=audit(03/25/2021 05:05:33.539:477) : proctitle=/usr/sbin/arpwatch -u arpwatch -F -C
type=SYSCALL msg=audit(03/25/2021 05:05:33.539:477) : arch=x86_64 syscall=socket success=yes exit=3 a0=netlink a1=SOCK_RAW a2=chaos a3=0x561ec5888830 items=0 ppid=1 pid=61027 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=arpwatch exe=/usr/sbin/arpwatch subj=system_u:system_r:arpwatch_t:s0 key=(null)
type=AVC msg=audit(03/25/2021 05:05:33.539:477) : avc: denied { create } for pid=61027 comm=arpwatch scontext=system_u:system_r:arpwatch_t:s0 tcontext=system_u:system_r:arpwatch_t:s0 tclass=netlink_generic_socket permissive=1
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type=PROCTITLE msg=audit(03/25/2021 05:05:33.540:478) : proctitle=/usr/sbin/arpwatch -u arpwatch -F -C
type=SYSCALL msg=audit(03/25/2021 05:05:33.540:478) : arch=x86_64 syscall=ioctl success=no exit=ENODEV(No such device) a0=0x3 a1=SIOCGIFNAME a2=0x7fff0226dfc0 a3=0x561ec5888830 items=0 ppid=1 pid=61027 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=arpwatch exe=/usr/sbin/arpwatch subj=system_u:system_r:arpwatch_t:s0 key=(null)
type=AVC msg=audit(03/25/2021 05:05:33.540:478) : avc: denied { ioctl } for pid=61027 comm=arpwatch path=socket:[68487] dev="sockfs" ino=68487 ioctlcmd=SIOCGIFNAME scontext=system_u:system_r:arpwatch_t:s0 tcontext=system_u:system_r:arpwatch_t:s0 tclass=netlink_generic_socket permissive=1
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I've submitted a Fedora PR to address the issue: https://github.com/fedora-selinux/selinux-policy/pull/661 I was unable to reproduce the cgroup search though, neither in permissive nor enforcing modes. Merged in rawhide. FEDORA-2021-15b81d905c has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-15b81d905c FEDORA-2021-15b81d905c has been pushed to the Fedora 34 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-15b81d905c` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-15b81d905c See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2021-15b81d905c has been pushed to the Fedora 34 stable repository. If problem still persists, please make note of it in this bug report. |
Description of problem: Version-Release number of selected component (if applicable): arpwatch-3.1-9.fc34.x86_64 selinux-policy-3.14.7-24.fc34.noarch selinux-policy-targeted-3.14.7-24.fc34.noarch How reproducible: *always Steps to Reproduce: 1. get a Fedora 34 machine (targeted policy is active) 2. start the arpwatch service 3. search for SELinux denials Actual results (enforcing mode): ---- type=PROCTITLE msg=audit(03/25/2021 04:58:37.585:468) : proctitle=/usr/sbin/arpwatch -u arpwatch -F -C type=SYSCALL msg=audit(03/25/2021 04:58:37.585:468) : arch=x86_64 syscall=socket success=no exit=EACCES(Permission denied) a0=netlink a1=SOCK_RAW a2=chaos a3=0x20 items=0 ppid=1 pid=8387 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=arpwatch exe=/usr/sbin/arpwatch subj=system_u:system_r:arpwatch_t:s0 key=(null) type=AVC msg=audit(03/25/2021 04:58:37.585:468) : avc: denied { create } for pid=8387 comm=arpwatch scontext=system_u:system_r:arpwatch_t:s0 tcontext=system_u:system_r:arpwatch_t:s0 tclass=netlink_generic_socket permissive=0 ---- type=PROCTITLE msg=audit(03/25/2021 04:58:38.626:470) : proctitle=/usr/sbin/arpwatch -u arpwatch -F -C type=PATH msg=audit(03/25/2021 04:58:38.626:470) : item=0 name=/sys/fs/cgroup/cgroup.events nametype=UNKNOWN cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(03/25/2021 04:58:38.626:470) : cwd=/var/lib/arpwatch type=SYSCALL msg=audit(03/25/2021 04:58:38.626:470) : arch=x86_64 syscall=access success=no exit=EACCES(Permission denied) a0=0x7f0fbac353d6 a1=F_OK a2=0x7f0fbb736160 a3=0xffffffff items=1 ppid=1 pid=8387 auid=unset uid=arpwatch gid=arpwatch euid=arpwatch suid=arpwatch fsuid=arpwatch egid=arpwatch sgid=arpwatch fsgid=arpwatch tty=(none) ses=unset comm=arpwatch exe=/usr/sbin/arpwatch subj=system_u:system_r:arpwatch_t:s0 key=(null) type=AVC msg=audit(03/25/2021 04:58:38.626:470) : avc: denied { search } for pid=8387 comm=arpwatch name=/ dev="cgroup2" ino=1 scontext=system_u:system_r:arpwatch_t:s0 tcontext=system_u:object_r:cgroup_t:s0 tclass=dir permissive=0 ---- Expected results: * no SELinux denials