Wireshark-bugs: [Wireshark-bugs] [Bug 2228] Stop capture doesn't work
Date: Thu, 20 Mar 2008 20:19:53 +0000 (GMT)
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2228





--- Comment #7 from Bill Meier <wmeier@xxxxxxxxxxx>  2008-03-20 20:19:51 GMT ---
> Arun, Peter, & Bill, are each of you configuring Wireshark with or without
> POSIX capabilities (libcap)?

> If dumpcap is setuid and it's not linked with libcap, it may not be able to
> change its userid back to the calling user.

   Yes: I'm linking with libcap and yes the setting of the userid is working
OK.

> should be able to kill dumpcap (although even this may not be the case as
> discussed in the linux-security-module mailing list thread linked in my last
> comment).

   In my case Wireshark is unable to kill dumpcap as discussed on the 
   linux=security-module list.

   I'm running Linux 2.6.24.3-34.fc8 

Unfortunately The "setcap" command & etc doesn't seem to be available on my
out-of-the-box fc8. (File associated capabilities not part of Fedora 8 kernel?)


FWIW: The definition of CAP_KILL seems to indicate that a process with
      this capability can kill *any* process.

  From /usr/include/sys/capability.h

  /* Overrides the restriction that the real or effective user ID of a
     process sending a signal must match the real or effective user ID
     of the process receiving the signal. */


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