Messages in this thread | | | From | Steve Grubb <> | Subject | Re: [PATCH 1/2] audit: add call argument to socketcall auditing | Date | Tue, 03 May 2022 13:16:18 -0400 |
| |
Hello,
On Tuesday, May 3, 2022 5:02:11 AM EDT Sven Schnelle wrote: > socketcall auditing misses the call argument: > > type=SOCKETCALL msg=audit: nargs=3 a0=10 a1=3 a2=c > > which renders socketcall auditing (almost) useless. Add the call > argument so it is possible to decode the actual syscall from the > audit log: > > type=SOCKETCALL msg=audit: call=1 nargs=3 a0=10 a1=3 a2=c
The call argument is in arg0 in the syscall record
type=PROCTITLE msg=audit(1651597634.301:1034): proctitle="./test" type=SOCKADDR msg=audit(1651597634.301:1034): saddr=020000357F0000013030303030303030 type=SOCKETCALL msg=audit(1651597634.301:1034): nargs=3 a0=3 a1=fff47510 a2=10 type=SYSCALL msg=audit(1651597634.301:1034): arch=40000003 syscall=102 success=no exit=-111 a0=3 a1=fff47520 a2=f7f306cb a3=35000002 items=0 ppid=10425 pid=10428 auid=325 uid=1325 gid=1325 euid=1325 suid=1325 fsuid=1325 egid=1325 sgid=1325 fsgid=1325 tty=pts2 ses=3 comm="test" exe="/ home/socketcall/test" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key="32bit-abi"
which user space translates into:
type=PROCTITLE msg=audit(05/03/2022 13:07:14.301:1034) : proctitle=./test type=SOCKADDR msg=audit(05/03/2022 13:07:14.301:1034) : saddr={ saddr_fam=inet laddr=127.0.0.1 lport=53 } type=SOCKETCALL msg=audit(05/03/2022 13:07:14.301:1034) : nargs=3 a0=0x3 a1=0xfff47510 a2=0x10 type=SYSCALL msg=audit(05/03/2022 13:07:14.301:1034) : arch=i386 syscall=socketcall(connect) success=no exit=ECONNREFUSED(Connection refused) a0=connect a1=0xfff47520 a2=0xf7f306cb a3=0x35000002 items=0 ppid=10425 pid=10428 auid=sgrubb uid=sgrubb gid=sgrubb euid=sgrubb suid=sgrubb fsuid=sgrubb egid=sgrubb sgid=sgrubb fsgid=sgrubb tty=pts2 ses=3 comm=test exe=/home/test/socketcall/test subj=unconfined_u:unconfined_r:unconfined_t:s0- s0:c0.c1023 key=32bit-abi
Nothing is missing.
-Steve
| |