Grsecurity works like a charm ,only one nagging mesage

Discuss usability issues, general maintenance, and general support issues for a grsecurity-enabled system.

Grsecurity works like a charm ,only one nagging mesage

Postby Jophn Deo » Wed Oct 13, 2004 2:50 pm

Grsecurity works like a charm on Debian Sarge, very easy to install.I have only one nagging mesage i would like to get rid of.

Use of CAP_SYS_ADMIN denied for /sbin/klogd [klogd: 22100]
parent of /sbin/init.
Jophn Deo
 
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Postby Jophn Deo » Fri Oct 15, 2004 1:52 pm

Solved.
Jophn Deo
 
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Postby reedbeat » Thu Dec 09, 2004 11:11 am

Would be nice if you could post your solution for this.

Got the same error pointing to klogd after finishing full learning mode.

Code: Select all
gradm -E


Code: Select all
grsec: (default:D:/) use of CAP_SYS_ADMIN denied for /sbin/klogd [klogd:3055] uid/euid:0/0 gid/egid:0/0, parent /sbin/init[init:1] uid/euid:0/0 gid/egid:0/0
grsec: more alerts, logging disabled for 10 seconds


Tried to add /sbin/klogd x to /etc/grsec/acl, nothing happened:
Code: Select all
 subject /sbin/klogd o {
        /                               h
        /sbin/klogd                 x
        -CAP_ALL
        +CAP_SYS_ADMIN
        bind    disabled
        connect disabled
}

Code: Select all
gradm -a admin
Passwort:

gradm -R





Debian Sarge, Kernel 2.6.7 , Gradm 2.01
reedbeat
 
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Postby spender » Thu Dec 09, 2004 11:49 am

the policy file is /etc/grsec/policy, no longer /etc/grsec/acl.

-Brad
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Postby Hue-Bond » Mon Dec 13, 2004 4:36 pm

>grsec: (default:D:/) use of CAP_SYS_ADMIN denied for /sbin/klogd
>[klogd:3055] uid/euid:0/0 gid/egid:0/0, parent /sbin/init[init:1] uid/euid:0/0
>gid/egid:0/0
>grsec: more alerts, logging disabled for 10 seconds
>
>Tried to add /sbin/klogd x to /etc/grsec/acl, nothing happened:
>
>subject /sbin/klogd o {
> / h
> /sbin/klogd x
> -CAP_ALL
> +CAP_SYS_ADMIN
> bind disabled
> connect disabled
>}

Note the "(default:D:/)" text that appears at the log message. That means that klogd is not executing under its subject, but under default role, default subject. Perhaps you have to adjust something. Better use the learning system by appending an "l" (letter l, not number 1) to the "o" after the path of klogd.

(How does one use this stupid phpbb quoting system?).
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Postby spender » Mon Dec 13, 2004 5:00 pm

I already solved his problem. If he adds the subject to the correct file, /etc/grsec/policy, it will work as expected.

-Brad
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