Segmentation fault in aureport's safe_print_string()

[Steve Grubb]

On Wednesday, May 29, 2019 11:57:48 AM EDT Steve Grubb wrote:
> Hello,
> 
> On Wednesday, May 22, 2019 4:08:06 PM EDT Zephyr Pellerin wrote:
> > While running `aureport -tm', I recieved a segmentation fault, I won't be
> > able to attach the core dump but I've tried include rudimentary
> > information about the crash.
> 
> Out of curiosity, which version of the audit package is doing this? And
> what C library is aureport linked with?

I think I found it. It should be fixed by this commit:
https://github.com/linux-audit/audit-userspace/commit/
cd06bc803355a535104c057370f7960c11aeef8f

Looks like sudo is sending malformed events. I'll look into that and see if I 
can also get that fixed, too.

-Steve

> It looks like we have an unterminated string somewhere. IOW, it's picked
> this up somewhere and you're seeing the effect on output which isn't
> helpful. If this is reproducible, can you narrow down the event that is
> causing this by altering the start and end times to see if you can get it
> down to a couple events? That would be helpful if you can.
> 
> Thanks,
> -Steve
> 
> > - Backtrace
> > 
> >     #0  0x00007ff3d7bbf8a1 in __strlen_avx2 () from /lib64/libc.so.6
> >     #1  0x000055b44a62f304 in safe_print_string ()
> >     #2  0x000055b44a62dbd6 in print_per_event_item ()
> >     #3  0x000055b44a62c709 in per_event_processing ()
> >     #4  0x000055b44a62184c in process_log_fd ()
> >     #5  0x000055b44a621c78 in process_logs ()
> >     #6  0x000055b44a621597 in main ()
> 
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