Package: selinux-policy-default Version: 2:2.20161023.1-9 Severity: grave Justification: renders package unusable Control: -1 = certbot
Dear Maintainer, I have tried to run Apache server with Let's Encrypt security certificates. I enabled SELinux in Enforcing mode. I've installed certbot with dependent pacheges. And when I try to run it, certbot command failed with error Segmentation fault: *** root@vps:~# getenforce Enforcing root@vps:~# certbot --apache -d virt.domain -d www.virt.domain Segmentation fault root@vps:~# man certbot root@vps:~# certbot --apache -d virt.domain -d www.virt.domain --debug Segmentation fault root@vps:~# *** There is auth.log messages when certbot fired: *** root@vps:/etc/bind# grep certbot /var/log/audit/audit.log type=AVC msg=audit(1592778047.217:76615): avc: denied { execmem } for pid=22641 comm="certbot" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 type=SYSCALL msg=audit(1592778047.217:76615): arch=c000003e syscall=9 success=no exit=-13 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=17778 pid=22641 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 ses=1405 comm="certbot" exe="/usr/bin/python3.5" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) type=ANOM_ABEND msg=audit(1592778047.221:76616): auid=0 uid=0 gid=0 ses=1405 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=22641 comm="certbot" exe="/usr/bin/python3.5" sig=11 type=AVC msg=audit(1592778051.169:76617): avc: denied { execmem } for pid=22643 comm="certbot" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 type=SYSCALL msg=audit(1592778051.169:76617): arch=c000003e syscall=9 success=no exit=-13 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=17778 pid=22643 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 ses=1405 comm="certbot" exe="/usr/bin/python3.5" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) type=ANOM_ABEND msg=audit(1592778051.173:76618): auid=0 uid=0 gid=0 ses=1405 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=22643 comm="certbot" exe="/usr/bin/python3.5" sig=11 type=AVC msg=audit(1592778288.940:76901): avc: denied { execmem } for pid=23208 comm="certbot" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 type=SYSCALL msg=audit(1592778288.940:76901): arch=c000003e syscall=9 success=no exit=-13 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=17778 pid=23208 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 ses=1405 comm="certbot" exe="/usr/bin/python3.5" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) type=ANOM_ABEND msg=audit(1592778288.944:76902): auid=0 uid=0 gid=0 ses=1405 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=23208 comm="certbot" exe="/usr/bin/python3.5" sig=11 type=AVC msg=audit(1592778319.924:76911): avc: denied { execmem } for pid=23219 comm="certbot" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 type=SYSCALL msg=audit(1592778319.924:76911): arch=c000003e syscall=9 success=no exit=-13 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=17778 pid=23219 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 ses=1405 comm="certbot" exe="/usr/bin/python3.5" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) type=ANOM_ABEND msg=audit(1592778319.928:76912): auid=0 uid=0 gid=0 ses=1405 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=23219 comm="certbot" exe="/usr/bin/python3.5" sig=11 type=AVC msg=audit(1592824753.138:84440): avc: denied { execmem } for pid=26179 comm="certbot" scontext=system_u:system_r:initrc_t:s0 tcontext=system_u:system_r:initrc_t:s0 tclass=process permissive=0 type=SYSCALL msg=audit(1592824753.138:84440): arch=c000003e syscall=9 success=no exit=-13 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=1 pid=26179 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="certbot" exe="/usr/bin/python3.5" subj=system_u:system_r:initrc_t:s0 key=(null) type=ANOM_ABEND msg=audit(1592824753.142:84441): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=system_u:system_r:initrc_t:s0 pid=26179 comm="certbot" exe="/usr/bin/python3.5" sig=11 type=SERVICE_START msg=audit(1592824753.150:84442): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=certbot comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' type=AVC msg=audit(1592832902.769:84609): avc: denied { execmem } for pid=26849 comm="certbot" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 type=SYSCALL msg=audit(1592832902.769:84609): arch=c000003e syscall=9 success=no exit=-13 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=17778 pid=26849 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 ses=1405 comm="certbot" exe="/usr/bin/python3.5" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) type=ANOM_ABEND msg=audit(1592832902.773:84610): auid=0 uid=0 gid=0 ses=1405 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=26849 comm="certbot" exe="/usr/bin/python3.5" sig=11 type=AVC msg=audit(1592832936.869:84611): avc: denied { execmem } for pid=26868 comm="certbot" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 type=SYSCALL msg=audit(1592832936.869:84611): arch=c000003e syscall=9 success=no exit=-13 a0=0 a1=1000 a2=7 a3=22 items=0 ppid=17778 pid=26868 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts4 ses=1405 comm="certbot" exe="/usr/bin/python3.5" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) type=ANOM_ABEND msg=audit(1592832936.873:84612): auid=0 uid=0 gid=0 ses=1405 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=26868 comm="certbot" exe="/usr/bin/python3.5" sig=11 root@vps:/etc/bind# *** autit2allow suggested me to enable those boleans: allow_execmem and allow_execstack: *** root@vps:/etc/bind# grep certbot /var/log/audit/audit.log | audit2why type=AVC msg=audit(1592778047.217:76615): avc: denied { execmem } for pid=22641 comm="certbot" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process permissive=0 Was caused by: One of the following booleans was set incorrectly. Description: Allow unconfined executables to map a memory region as both executable and writable, this is dangerous and the executable should be reported in bugzilla") Allow access by executing: # setsebool -P allow_execmem 1 Description: Allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla") Allow access by executing: # setsebool -P allow_execstack 1 *** After place SELinux into Permessive mode, it works fine: *** root@vps:/tmp# setenforce 0 root@vps:/tmp# certbot --apache -d example.com -d www.example.com --debug Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator apache, Installer apache Enter email address (used for urgent renewal and security notices) (Enter 'c' to cancel): mc.sim@k-max.*** - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Please read the Terms of Service at https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf. You must agree in order to register with the ACME server at https://acme-v02.api.letsencrypt.org/directory <...> *** Current version of certbot packages are: *** Versions of packages certbot depends on: ii init-system-helpers 1.48 ii python3 3.5.3-1 ii python3-certbot 0.28.0-1~deb9u2 certbot recommends no packages. Versions of packages certbot suggests: pn python-certbot-doc <none> ii python3-certbot-apache 0.28.0-1~deb9u1 pn python3-certbot-nginx <none> *** So, I could say certbot does not work at all with SELinux Enforcing mode. -- System Information: Debian Release: 9.12 APT prefers oldstable-updates APT policy: (500, 'oldstable-updates'), (500, 'oldstable') Architecture: amd64 (x86_64) Kernel: Linux 4.9.0-12-amd64 (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages selinux-policy-default depends on: ii libselinux1 2.6-3+b3 ii libsemanage1 2.6-2 ii libsepol1 2.6-2 ii policycoreutils 2.6-3 ii selinux-utils 2.6-3+b3 Versions of packages selinux-policy-default recommends: ii checkpolicy 2.6-2 ii setools 4.0.1-6 Versions of packages selinux-policy-default suggests: pn logcheck <none> pn syslog-summary <none> -- no debconf information