| 1 |
I was upgrading my kernel/patching it with grsec the other day when |
| 2 |
all of a sudden I couldnt su as a normal user anymore. I dont know how |
| 3 |
this would apply considering the new kernel wasnt (and still isnt) |
| 4 |
booted yet. |
| 5 |
|
| 6 |
when attempting to execute 'su' as a normal error I get these grsec logs |
| 7 |
|
| 8 |
grsec: exec of /bin/su (su ) by /bin/bash[bash:31770] |
| 9 |
uid/euid:1000/1000 gid/egid:1000/1000, parent /bin/bash[bash:19406] |
| 10 |
uid/euid:1000/1000 gid/egid:1000/1000 |
| 11 |
grsec: denied untrusted exec of /lib64/ld-2.4.so by /bin/su[su:31770] |
| 12 |
uid/euid:1000/1000 gid/egid:1000/1000, parent /bin/bash[bash:19406] |
| 13 |
uid/euid:1000/1000 gid/egid:1000/1000 |
| 14 |
grsec: signal 11 sent to /bin/su[su:31770] uid/euid:1000/1000 |
| 15 |
gid/egid:1000/1000, parent /bin/bash[bash:19406] uid/euid:1000/1000 |
| 16 |
gid/egid:1000/1000 |
| 17 |
|
| 18 |
When attempting to execute 'nano' I get these logs. |
| 19 |
|
| 20 |
|
| 21 |
grsec: exec of /bin/nano (nano ) by /bin/bash[bash:4440] |
| 22 |
uid/euid:1000/1000 gid/egid:1000/1000, parent /bin/bash[bash:19406] |
| 23 |
uid/euid:1000/1000 gid/egid:1000/1000 |
| 24 |
grsec: denied untrusted exec of /lib64/ld-2.4.so by |
| 25 |
/bin/nano[nano:4440] uid/euid:1000/1000 gid/egid:1000/1000, parent |
| 26 |
/bin/bash[bash:19406] uid/euid:1000/1000 gid/egid:1000/1000 |
| 27 |
grsec: signal 11 sent to /bin/nano[nano:4440] uid/euid:1000/1000 |
| 28 |
gid/egid:1000/1000, parent /bin/bash[bash:19406] uid/euid:1000/1000 |
| 29 |
gid/egid:1000/1000 |
| 30 |
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE |
| 31 |
against limit 0 for /bin/bash[nano:4440] uid/euid:1000/1000 |
| 32 |
gid/egid:1000/1000, parent /bin/bash[bash:19406] uid/euid:1000/1000 |
| 33 |
gid/egid:1000/1000 |
| 34 |
|
| 35 |
How do these relate? What is ld-2.4.so? Whats so bad about it? |
| 36 |
|
| 37 |
-- |
| 38 |
Matthew Poletiek |
| 39 |
www.chill-fu.net |
| 40 |
-- |
| 41 |
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