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| author | Jeff Layton <jlayton@redhat.com> | 2009-08-26 06:26:02 -0400 |
|---|---|---|
| committer | Jeff Layton <jlayton@redhat.com> | 2009-08-26 06:26:02 -0400 |
| commit | da99e3a724b493ba47a06d0704b891819ad16647 (patch) | |
| tree | 55a2bfd8341e38e642fc8d40ea4daeb481dd4c89 /source3/winbindd/winbindd_util.c | |
| parent | 3544e685ade5b331e473c8680d42a748d9389125 (diff) | |
| download | samba-da99e3a724b493ba47a06d0704b891819ad16647.tar.gz samba-da99e3a724b493ba47a06d0704b891819ad16647.tar.bz2 samba-da99e3a724b493ba47a06d0704b891819ad16647.zip | |
cifs.upcall: make using ip address conditional on new option
Igor Mammedov pointed out that reverse resolving an IP address to get
the hostname portion of a principal could open a possible attack
vector. If an attacker were to gain control of DNS, then he could
redirect the mount to a server of his choosing, and fix the reverse
resolution to point to a hostname of his choosing (one where he has
the key for the corresponding cifs/ or host/ principal).
That said, we often trust DNS for other reasons and it can be useful
to do so. Make the code that allows trusting DNS to be enabled by
adding --trust-dns to the cifs.upcall invocation.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Diffstat (limited to 'source3/winbindd/winbindd_util.c')
0 files changed, 0 insertions, 0 deletions