Bug 2054657
| Summary: | SELinux prevents the chage process from executing the sss_cache program | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 9 | Reporter: | Filip Dvorak <fdvorak> | |
| Component: | selinux-policy | Assignee: | Zdenek Pytela <zpytela> | |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | medium | |||
| Version: | 9.0 | CC: | cjeanner, lvrabec, mmalik, sandyada, ssekidde | |
| Target Milestone: | rc | Keywords: | AutoVerified, Triaged | |
| Target Release: | 9.0 | Flags: | pm-rhel:
mirror+
|
|
| Hardware: | All | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | selinux-policy-34.1.27-1.el9 | Doc Type: | No Doc Update | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 2054718 (view as bug list) | Environment: | ||
| Last Closed: | 2022-05-17 15:50:20 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: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 2057261 | |||
Caught in enforcing mode:
# chage -m 1 -M 90 alice
chage: cannot execute /usr/sbin/sss_cache: Permission denied
#
----
type=PROCTITLE msg=audit(02/15/2022 09:18:24.688:429) : proctitle=chage -m 1 -M 90 alice
type=PATH msg=audit(02/15/2022 09:18:24.688:429) : item=0 name=/usr/sbin/sss_cache inode=6802998 dev=fd:01 mode=file,755 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:sssd_exec_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(02/15/2022 09:18:24.688:429) : cwd=/root
type=SYSCALL msg=audit(02/15/2022 09:18:24.688:429) : arch=x86_64 syscall=execve success=no exit=EACCES(Permission denied) a0=0x56158fb26d8a a1=0x7fff96782950 a2=0x7fff96782948 a3=0x7f1d57889008 items=1 ppid=5674 pid=5677 auid=root uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts0 ses=4 comm=chage exe=/usr/bin/chage subj=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(02/15/2022 09:18:24.688:429) : avc: denied { execute } for pid=5677 comm=chage name=sss_cache dev="vda1" ino=6802998 scontext=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sssd_exec_t:s0 tclass=file permissive=0
----
Caught in permissive mode:
# chage -m 1 -M 90 alice
#
----
type=PROCTITLE msg=audit(02/15/2022 09:19:34.552:435) : proctitle=sss_cache -UG
type=PATH msg=audit(02/15/2022 09:19:34.552:435) : item=1 name=/lib64/ld-linux-x86-64.so.2 inode=6413786 dev=fd:01 mode=file,755 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:ld_so_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=PATH msg=audit(02/15/2022 09:19:34.552:435) : item=0 name=/usr/sbin/sss_cache inode=6802998 dev=fd:01 mode=file,755 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:sssd_exec_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(02/15/2022 09:19:34.552:435) : cwd=/root
type=EXECVE msg=audit(02/15/2022 09:19:34.552:435) : argc=2 a0=sss_cache a1=-UG
type=SYSCALL msg=audit(02/15/2022 09:19:34.552:435) : arch=x86_64 syscall=execve success=yes exit=0 a0=0x555f0b935d8a a1=0x7ffc8a1d36d0 a2=0x7ffc8a1d36c8 a3=0x7f29cfb02008 items=2 ppid=5681 pid=5684 auid=root uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts0 ses=4 comm=sss_cache exe=/usr/sbin/sss_cache subj=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(02/15/2022 09:19:34.552:435) : avc: denied { map } for pid=5684 comm=sss_cache path=/usr/sbin/sss_cache dev="vda1" ino=6802998 scontext=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sssd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(02/15/2022 09:19:34.552:435) : avc: denied { execute_no_trans } for pid=5684 comm=chage path=/usr/sbin/sss_cache dev="vda1" ino=6802998 scontext=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sssd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(02/15/2022 09:19:34.552:435) : avc: denied { read open } for pid=5684 comm=chage path=/usr/sbin/sss_cache dev="vda1" ino=6802998 scontext=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sssd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(02/15/2022 09:19:34.552:435) : avc: denied { execute } for pid=5684 comm=chage name=sss_cache dev="vda1" ino=6802998 scontext=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sssd_exec_t:s0 tclass=file permissive=1
----
To backport:
commit f540263f5ffcf315b970ca6428b2f04ff5c13f59
Author: Zdenek Pytela <zpytela>
Date: Wed Feb 16 16:57:08 2022 +0100
Allow chage domtrans to sssd
*** Bug 2057297 has been marked as a duplicate of this bug. *** 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 (new packages: selinux-policy), 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-2022:3918 *** Bug 2057261 has been marked as a duplicate of this bug. *** |
Description of problem: there is a AVC message when the command chage is used. Version-Release number of selected component (if applicable): selinux-policy-34.1.24-1.el9.noarch RHEL9 Steps to Reproduce: 1.create a user with some passwoed and use "chage -m 1 -M 90 alice" Actual results: SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: targeted Current mode: enforcing Mode from config file: enforcing Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: actual (secure) Max kernel policy version: 33 selinux-policy-34.1.24-1.el9.noarch ---- time->Mon Feb 14 11:05:32 2022 type=PROCTITLE msg=audit(1644854732.203:3013): proctitle=6368616765002D2D6C6173746461790031002D2D6D617864617973003100627A373533373634 type=SYSCALL msg=audit(1644854732.203:3013): arch=c000003e syscall=59 success=no exit=-13 a0=55a24bba9d8a a1=7ffc08331630 a2=7ffc08331628 a3=7fd01cab2008 items=0 ppid=102517 pid=102520 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4 comm="chage" exe="/usr/bin/chage" subj=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1644854732.203:3013): avc: denied { execute } for pid=102520 comm="chage" name="sss_cache" dev="vda4" ino=4596 scontext=unconfined_u:unconfined_r:passwd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sssd_exec_t:s0 tclass=file permissive=0 Expected results: No AVC message.