Bug 2223894
| Summary: | SELinux denials appear during the start of ipa-dnskeysyncd or ipa-ods-exporter services | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Milos Malik <mmalik> |
| Component: | freeipa | Assignee: | IPA Maintainers <ipa-maint> |
| Status: | NEW --- | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 39 | CC: | abokovoy, ftrivino, ipa-maint, jhrozek, mhjacks, pvoborni, rcritten, ssorce, twoerner |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
I'm guessing that glibc functions try to the access the files: # ldd /usr/bin/python3.12 linux-vdso.so.1 (0x00007ffc4edb6000) libpython3.12.so.1.0 => /lib64/libpython3.12.so.1.0 (0x00007fb55dc00000) libc.so.6 => /lib64/libc.so.6 (0x00007fb55d800000) libm.so.6 => /lib64/libm.so.6 (0x00007fb55e347000) /lib64/ld-linux-x86-64.so.2 (0x00007fb55e436000) # strings /lib64/libc.so.6 | grep possible I/O possible Operation not possible due to RF-kill /sys/devices/system/cpu/possible # strings /lib64/libc.so.6 | grep /proc/ /proc/se /proc/self/maps /proc/self/task/%u/comm /proc/self/fd /proc/mounts /proc/sys/kernel/rtsig-max /proc/sys/kernel/ngroups_max /proc/stat /proc/self/fd/ /proc/meminfo /proc/self/loginuid /proc/sys/vm/overcommit_memory # Upstream issue: https://pagure.io/freeipa/issue/9386 This is the same as https://github.com/fedora-selinux/selinux-policy/pull/1260, we figured out the reason couple months ago but most people were on PTO. This bug appears to have been reported against 'rawhide' during the Fedora Linux 39 development cycle. Changing version to 39. |
freeipa-client-4.10.2-1.fc39.2.x86_64 freeipa-client-common-4.10.2-1.fc39.2.noarch freeipa-common-4.10.2-1.fc39.2.noarch freeipa-healthcheck-core-0.12-5.fc39.noarch freeipa-selinux-4.10.2-1.fc39.2.noarch freeipa-server-4.10.2-1.fc39.2.x86_64 freeipa-server-common-4.10.2-1.fc39.2.noarch freeipa-server-dns-4.10.2-1.fc39.2.noarch Reproducible: Always Steps to Reproduce: 1. get a Fedora rawhide machine (targeted policy is active) 2. start the ipa-dnskeysyncd service (the attempt may not succeed) 3. start the ipa-ods-exporter service (the attempt may not succeed) 4. search for SELinux denials Actual Results: ---- type=PROCTITLE msg=audit(07/19/2023 04:22:49.595:1272) : proctitle=/usr/bin/python3 -I /usr/libexec/ipa/ipa-ods-exporter type=PATH msg=audit(07/19/2023 04:22:49.595:1272) : item=0 name=/sys/devices/system/cpu/possible inode=42 dev=00:15 mode=file,444 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:sysfs_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(07/19/2023 04:22:49.595:1272) : cwd=/ type=SYSCALL msg=audit(07/19/2023 04:22:49.595:1272) : arch=x86_64 syscall=openat success=no exit=EACCES(Permission denied) a0=AT_FDCWD a1=0x7f870a7a8a20 a2=O_RDONLY|O_CLOEXEC a3=0x0 items=1 ppid=1 pid=7516 auid=unset uid=ods gid=ods euid=ods suid=ods fsuid=ods egid=ods sgid=ods fsgid=ods tty=(none) ses=unset comm=ipa-ods-exporte exe=/usr/bin/python3.12 subj=system_u:system_r:ipa_ods_exporter_t:s0 key=(null) type=AVC msg=audit(07/19/2023 04:22:49.595:1272) : avc: denied { read } for pid=7516 comm=ipa-ods-exporte name=possible dev="sysfs" ino=42 scontext=system_u:system_r:ipa_ods_exporter_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=file permissive=0 ---- type=PROCTITLE msg=audit(07/19/2023 04:22:49.596:1273) : proctitle=/usr/bin/python3 -I /usr/libexec/ipa/ipa-ods-exporter type=PATH msg=audit(07/19/2023 04:22:49.596:1273) : item=0 name=/proc/stat inode=4026532026 dev=00:14 mode=file,444 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:proc_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(07/19/2023 04:22:49.596:1273) : cwd=/ type=SYSCALL msg=audit(07/19/2023 04:22:49.596:1273) : arch=x86_64 syscall=openat success=no exit=EACCES(Permission denied) a0=AT_FDCWD a1=0x7f870a7a2a17 a2=O_RDONLY|O_CLOEXEC a3=0x0 items=1 ppid=1 pid=7516 auid=unset uid=ods gid=ods euid=ods suid=ods fsuid=ods egid=ods sgid=ods fsgid=ods tty=(none) ses=unset comm=ipa-ods-exporte exe=/usr/bin/python3.12 subj=system_u:system_r:ipa_ods_exporter_t:s0 key=(null) type=AVC msg=audit(07/19/2023 04:22:49.596:1273) : avc: denied { read } for pid=7516 comm=ipa-ods-exporte name=stat dev="proc" ino=4026532026 scontext=system_u:system_r:ipa_ods_exporter_t:s0 tcontext=system_u:object_r:proc_t:s0 tclass=file permissive=0 ---- type=PROCTITLE msg=audit(07/19/2023 04:22:51.842:1278) : proctitle=/usr/bin/python3 -I /usr/libexec/ipa/ipa-dnskeysyncd type=PATH msg=audit(07/19/2023 04:22:51.842:1278) : item=0 name=/sys/devices/system/cpu/possible inode=42 dev=00:15 mode=file,444 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:sysfs_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(07/19/2023 04:22:51.842:1278) : cwd=/ type=SYSCALL msg=audit(07/19/2023 04:22:51.842:1278) : arch=x86_64 syscall=openat success=no exit=EACCES(Permission denied) a0=AT_FDCWD a1=0x7eff381a8a20 a2=O_RDONLY|O_CLOEXEC a3=0x0 items=1 ppid=1 pid=7522 auid=unset uid=ods gid=named euid=ods suid=ods fsuid=ods egid=named sgid=named fsgid=named tty=(none) ses=unset comm=ipa-dnskeysyncd exe=/usr/bin/python3.12 subj=system_u:system_r:ipa_dnskey_t:s0 key=(null) type=AVC msg=audit(07/19/2023 04:22:51.842:1278) : avc: denied { read } for pid=7522 comm=ipa-dnskeysyncd name=possible dev="sysfs" ino=42 scontext=system_u:system_r:ipa_dnskey_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=file permissive=0 ---- Expected Results: no SELinux denials When full auditing is enabled, SELinux denials contain the "type=PATH" records which show the accessed files: * https://lukas-vrabec.com/index.php/2018/07/16/how-to-enable-full-auditing-in-audit-daemon/