maria-discuss team mailing list archive

[Reindl Harald <h.reindl@xxxxxxxxxxxxx>]

Am 12.09.2016 um 20:25 schrieb Sergei Golubchik:
> Hi, Alex!
>
> On Sep 12, Alex wrote:
> > Hello,
> >
> > In regards to this zero day remote exploit , it seems MariaDB is also
> > affected. Percona seems to have released new versions out to fix this.
> > Any news from MariaDB side ?
> >
> > http://legalhackers.com/advisories/MySQL-Exploit-Remote-Root-Code-Execution-Privesc-CVE-2016-6662.html
>
> Yes, it was https://jira.mariadb.org/browse/MDEV-10465,
> fixed in 5.5.51, 10.0.27, 10.1.17, all released last month

thanks

but "MySQL-Exploit-Remote-Root-Code-Execution" is written by fools - how 
would a mysqld running as restricted user get root-privileges without 
any additional kernel-bug and who right in his mind is running mysqld as 
root where with port 3306 it donÄt need that privileges even for startup?

[root@srv-rhsoft:~]$ cat /usr/lib/systemd/system/mysqld.service
[Unit]
Description=MariaDB Database
Before=postfix.service dovecot.service dbmail-imapd.service 
dbmail-lmtpd.service dbmail-pop3d.service dbmail-timsieved.service

[Service]
Type=simple
User=mysql
Group=mysql
ExecStart=/usr/libexec/mysqld --defaults-file=/etc/my.cnf 
--pid-file=/dev/null
ExecStartPost=/usr/libexec/mysqld-wait-ready $MAINPID
Environment="LANG=en_GB.UTF-8"
Restart=always
RestartSec=1
TimeoutSec=300
LimitNOFILE=infinity
LimitMEMLOCK=infinity
OOMScoreAdjust=-1000
TasksMax=2048

PrivateTmp=yes
PrivateDevices=yes
NoNewPrivileges=yes
CapabilityBoundingSet=~CAP_AUDIT_CONTROL CAP_AUDIT_WRITE 
CAP_DAC_OVERRIDE CAP_NET_ADMIN CAP_NET_BIND_SERVICE CAP_SETGID 
CAP_SETUID CAP_SYS_ADMIN CAP_SYS_BOOT CAP_SYS_MODULE CAP_SYS_PTRACE
SystemCallFilter=~acct modify_ldt add_key adjtimex clock_adjtime 
delete_module fanotify_init finit_module get_mempolicy init_module kcmp 
kexec_load keyctl lookup_dcookie mbind mount open_by_handle_at 
perf_event_open pivot_root process_vm_readv process_vm_writev ptrace 
request_key set_mempolicy swapoff swapon umount2 uselib vmsplice
RestrictAddressFamilies=AF_UNIX AF_LOCAL AF_INET AF_INET6
SystemCallArchitectures=x86-64

ReadOnlyDirectories=/etc
ReadOnlyDirectories=/usr
ReadOnlyDirectories=/var/lib
ReadWriteDirectories=/var/lib/mysql