Mercurial > dropbear
diff configure.ac @ 1861:2b3a8026a6ce
Add re-exec for server
This allows ASLR to re-randomize the address
space for every connection, preventing some
vulnerabilities from being exploitable by
repeated probing.
Overhead (memory and time) is yet to be confirmed.
At present this is only enabled on Linux. Other BSD platforms
with fexecve() would probably also work though have not been tested.
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Sun, 30 Jan 2022 10:14:56 +0800 |
| parents | d34f50b7b9fd |
| children |
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--- a/configure.ac Thu Jan 27 15:09:29 2022 +0800 +++ b/configure.ac Sun Jan 30 10:14:56 2022 +0800 @@ -386,7 +386,7 @@ pty.h libutil.h libgen.h inttypes.h stropts.h utmp.h \ utmpx.h lastlog.h paths.h util.h netdb.h security/pam_appl.h \ pam/pam_appl.h netinet/in_systm.h sys/uio.h linux/pkt_sched.h \ - sys/random.h]) + sys/random.h sys/prctl.h]) # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST @@ -841,7 +841,7 @@ AC_FUNC_SELECT_ARGTYPES AC_CHECK_FUNCS([getpass getspnam getusershell putenv]) AC_CHECK_FUNCS([clearenv strlcpy strlcat daemon basename _getpty getaddrinfo ]) -AC_CHECK_FUNCS([freeaddrinfo getnameinfo fork writev getgrouplist]) +AC_CHECK_FUNCS([freeaddrinfo getnameinfo fork writev getgrouplist fexecve]) AC_SEARCH_LIBS(basename, gen, AC_DEFINE(HAVE_BASENAME))