-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/16/2013 02:55 AM, Tim.Einmahl@xxxxxx wrote: > Hi, > > I see this on Rhel6.4, selinux-policy-targeted-3.7.19-195.el6_4.12. > > Regards Tim > The default their should be on, so I would recommend you turn the boolean back on. > -----Ursprüngliche Nachricht----- Von: Daniel J Walsh > [mailto:dwalsh@xxxxxxxxxx] Gesendet: Dienstag, 15. Oktober 2013 17:11 An: > Einmahl, Tim; selinux@xxxxxxxxxxxxxxxxxxxxxxx Betreff: Re: > allow_domain_fd_use > > On 10/15/2013 03:48 AM, Tim.Einmahl@xxxxxx wrote: >> Hi, > >> I would like to know, how much risk is there setting allow_domain_fd_use >> to 1? > >> I am not totally sure about the security impact. Would that allow a >> process in one domain to read files and sockets that have been opened by >> a another domain? > > >> Usually, I disable it, but from time to time I get error messages like: > >> - type=AVC msg=audit(1381801383.801:31585): avc: denied { use } for >> pid=25761 comm="mail" path="/dev/null" dev=devtmpfs ino=3656 >> scontext=system_u:system_r:logrotate_mail_t:s0-s0:c0.c1023 >> tcontext=system_u:system_r:system_cronjob_t:s0-s0:c0.c1023 tclass=fd > > >> type=AVC msg=audit(1381801383.801:31585): avc: denied { use } for >> pid=25761 comm="mail" path="/dev/null" dev=devtmpfs ino=3656 >> scontext=system_u:system_r:logrotate_mail_t:s0-s0:c0.c1023 >> tcontext=system_u:system_r:system_cronjob_t:s0-s0:c0.c1023 tclass=fd > > >> type=SYSCALL msg=audit(1381801383.801:31585): arch=x86_64 syscall=execve >> success=yes exit=0 a0=229fcd0 a1=229fd50 a2=229df90 a3=7fffb994eef0 >> items=0 ppid=25741 pid=25761 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 >> egid=0 sgid=0 fsgid=0 tty=(none) ses=1677 comm=mail exe=/bin/mailx >> subj=system_u:system_r:logrotate_mail_t:s0-s0:c0.c1023 key=(null) > > >> On a hypervisor, I have to allow it, otherwise I get millions of >> messages like > >> type=SYSCALL msg=audit(1381823069.947:3240474): arch=c000003e syscall=0 >> success=no exit=-13 a0=17 a1=7f9045c99ae4 a2=11000 a3=7fffa277af30 >> items=0 ppid=1 pid=9616 auid=4294967295 uid=107 gid=107 euid=107 suid=107 >> fsuid=107 egid=107 sgid=107 fsgid=107 tty=(none) ses=4294967295 >> comm="qemu-kvm" >> exe=2F7573722F6C6962657865632F71656D752D6B766D202864656C6574656429 >> subj=system_u:system_r:svirt_t:s0:c559,c791 key=(null) type=AVC >> msg=audit(1381823069.947:3240474): avc: denied { use } for pid=9616 >> comm="qemu-kvm" path="/dev/net/tun" dev=devtmpfs ino=9274 >> scontext=system_u:system_r:svirt_t:s0:c559,c791 >> tcontext=system_u:system_r:virtd_t:s0-s0:c0.c1023 tclass=fd > > >> Regards Tim > >> -- selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx >> https://admin.fedoraproject.org/mailman/listinfo/selinux > > > We usually have this on by default. What OS/Policy version are you seeing > this with? > > This basically means that one process can open a UID and pass it to > another process either through a fork/exec or my fd passing. > > > -- selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx > https://admin.fedoraproject.org/mailman/listinfo/selinux > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlJejccACgkQrlYvE4MpobOzowCgk/vlIO2W1X2eXVBGmKi9e82K plYAnRMfP6YKBOm38MvGhZ2U4H6QlhZh =y72d -----END PGP SIGNATURE----- -- selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/selinux
