[apparmor] Weird problem with LD_LIBRARY_PATH

[John Johansen]

On 05/08/2014 06:01 PM, Aaron Lewis wrote:
> Perhaps I could be restricting /opt/chromium/chromium/chromium.sh instead?
> 
maybe, there are a couple things that could cause odd failures. Like scrubbing
of environment variables.

Can you turn of audit quieting and turn on debugging and then try? As root do

echo -n "noquiet" > /sys/module/apparmor/parameters/audit
echo 1 > /sys/module/apparmor/parameters/debug 

and then retry
look in the dmesg log for output.

another possibility is to try stracing of chromium and see which syscall it
is failing on
  strace -s 1024 -o strace.out -f chromium

or what ever your command is to start it


> Anyway, with aa-complain I see this: (strace)
> rt_sigaction(SIGINT, {0x43b7b0, [], SA_RESTORER, 0x7573aec4fdf0},
> {SIG_DFL, [], SA_RESTORER, 0x7573aec4fdf0}, 8) = 0
> wait4(-1, /opt/chromium/chromium/chromium: error while loading shared
> libraries: libicui18n.so.52: cannot open shared object file: No such
> file or directory
> 
> If I disable that profile, it just work
> 
> In syslog I only saw this:
>  [3311.099887] type=1400 audit(1399597036.453:60): apparmor="STATUS"
> operation="profile_replace" name="/opt/chromium/chromium/chromium"
> pid=29678 comm="apparmor_parser"
> [ 3311.148516] type=1400 audit(1399597036.503:61): apparmor="STATUS"
> operation="profile_replace" name="chromium_browser_sandbox" pid=29678
> comm="apparmor_parser"
> [ 3311.148835] type=1400 audit(1399597036.503:62): apparmor="STATUS"
> operation="profile_replace" name="xdgsettings" pid=29678
> comm="apparmor_parser"
> [ 3320.977405] grsec: process /usr/bin/strace(strace:29737) attached
> to via ptrace by /usr/bin/strace[strace:29735] uid/euid:1000/1000
> gid/egid:1000/1000, parent /usr/bin/bash[bash:29692]
> uid/euid:1000/1000 gid/egid:1000/1000
> 
> 
> On Thu, May 8, 2014 at 10:07 AM, Aaron Lewis <the.warl0ck.1989 at gmail.com> wrote:
>> That old version of libicuXXX does not exists anywhere else
>>
>> On Thu, May 8, 2014 at 10:06 AM, Aaron Lewis <the.warl0ck.1989 at gmail.com> wrote:
>>> Too bad, there's no "denied" messages in syslog
>>>
>>> Not with aa-enforce or aa-complain.
>>>
>>> Also, I'm running old version of libicuXX.so.VERSION (Arch Linux)
>>>
>>> On Tue, May 6, 2014 at 1:38 PM, Seth Arnold <seth.arnold at canonical.com> wrote:
>>>> On Tue, May 06, 2014 at 08:40:09AM +0800, Aaron Lewis wrote:
>>>>>
>>>>> %> cat /opt/chromium/chromium/chromium.sh
>>>>> #!/bin/bash
>>>>>
>>>>> export LD_LIBRARY_PATH=/opt/chromium/libs/
>>>>> /opt/chromium/chromium/chromium "$@"
>>>>>
>>>>> When I enforce the opt.chromium.chromium.chromium.sh policy, it says:
>>>>> (No problem running it if aa is diabled)
>>>>> %> /opt/chromium/chromium/chromium.sh
>>>>> /opt/chromium/chromium/chromium: error while loading shared libraries:
>>>>> libicui18n.so.52: cannot open shared object file: No such file or
>>>>> directory
>>>>>
>>>>> But I already have: "/opt/chromium/libs/* rm," in that profile, anything wrong?
>>>>>
>>>>> That profile is for "/opt/chromium/chromium/chromium", not the script though
>>>>
>>>> LD_LIBRARY_PATH adds to the library path, it doesn't replace it entirely;
>>>> on my system, this library is in /usr/lib/x86_64-linux-gnu/libicui18n.so.52.1
>>>>
>>>> Does this library exist in /opt/chromium/libs/ or elsewhere in a path
>>>> referenced via /etc/ld.so.conf or one of ld.so's defaults?
>>>> Does your profile allow 'rm' access to this library?
>>>>
>>>> Hopefully your system logs will contain more information; if not in
>>>> /var/log/syslog then perhaps in /var/log/audit/audit.log.
>>>>
>>>> Thanks
>>>>
>>>> --
>>>> AppArmor mailing list
>>>> AppArmor at lists.ubuntu.com
>>>> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/apparmor
>>>>
>>>
>>>
>>>
>>> --
>>> Best Regards,
>>> Aaron Lewis - PGP: 0x13714D33 - http://pgp.mit.edu/
>>> Finger Print:   9F67 391B B770 8FF6 99DC  D92D 87F6 2602 1371 4D33
>>
>>
>>
>> --
>> Best Regards,
>> Aaron Lewis - PGP: 0x13714D33 - http://pgp.mit.edu/
>> Finger Print:   9F67 391B B770 8FF6 99DC  D92D 87F6 2602 1371 4D33
> 
> 
>