Commit Graph

23658 Commits

Author SHA1 Message Date
Nick Mathewson
bb97f680e7 Merge branch 'bug22801_028' into maint-0.2.9 2017-07-05 11:18:59 -04:00
teor
878e0d45a5 Always allow extra file descriptors when setting the connection maximum
When setting the maximum number of connections allowed by the OS,
always allow some extra file descriptors for other files.

Fixes bug 22797; bugfix on 0.2.0.10-alpha.
2017-07-05 11:15:10 -04:00
Nick Mathewson
bb3f74e66b Fix assertion failure related to openbsd strtol().
Fixes bug 22789; bugfix on 0.2.3.8-alpha.
2017-07-03 11:22:27 -04:00
Nick Mathewson
5361032219 Fix -Wfloat-conversion C warnings on mingw in clamp_double_to_int64.
We just have to suppress these warnings: Mingw's math.h uses gcc's
__builtin_choose_expr() facility to declare isnan, isfinite, and
signbit.  But as implemented in at least some versions of gcc,
__builtin_choose_expr() can generate type warnings even from
branches that are not taken.

Fixes bug 22801; bugfix on 0.2.8.1-alpha.
2017-07-03 10:59:31 -04:00
Nick Mathewson
ec9c6d7723 Merge remote-tracking branch 'teor/bug21507-029' into maint-0.2.9 2017-06-28 14:03:20 -04:00
Nick Mathewson
4060253749 Merge remote-tracking branch 'teor/bug21576_029_v2' into maint-0.2.9 2017-06-28 13:57:54 -04:00
Nick Mathewson
f367453cb5 Mark descriptors as undownloadable when dirserv_add_() rejects them
As of ac2f6b608a in 0.2.1.19-alpha,
Sebastian fixed bug 888 by marking descriptors as "impossible" by
digest if they got rejected during the
router_load_routers_from_string() phase. This fix stopped clients
and relays from downloading the same thing over and over.

But we never made the same change for descriptors rejected during
dirserv_add_{descriptor,extrainfo}.  Instead, we tried to notice in
advance that we'd reject them with dirserv_would_reject().

This notice-in-advance check stopped working once we added
key-pinning and didn't make a corresponding key-pinning change to
dirserv_would_reject() [since a routerstatus_t doesn't include an
ed25519 key].

So as a fix, let's make the dirserv_add_*() functions mark digests
as undownloadable when they are rejected.

Fixes bug 22349; I am calling this a fix on 0.2.1.19-alpha, though
you could also argue for it being a fix on 0.2.7.2-alpha.
2017-06-27 12:01:46 -04:00
Nick Mathewson
3483f7c003 Merge branch 'maint-0.2.7-redux' into maint-0.2.8 2017-06-27 11:04:44 -04:00
Nick Mathewson
9a0fd2dbb1 Merge branch 'maint-0.2.6' into maint-0.2.7-redux 2017-06-27 11:04:44 -04:00
Nick Mathewson
3de27618e6 Merge branch 'maint-0.2.5' into maint-0.2.6 2017-06-27 11:04:44 -04:00
Nick Mathewson
ccae991662 Merge branch 'maint-0.2.4' into maint-0.2.5 2017-06-27 11:04:44 -04:00
Nick Mathewson
711160a46f Merge branch 'maint-0.2.8' into maint-0.2.9 2017-06-27 11:04:44 -04:00
Nick Mathewson
d56f699399 Merge branch 'bug22737_024' into maint-0.2.4 2017-06-27 11:04:41 -04:00
Nick Mathewson
8d2978b13c Fix an errant memset() into the middle of a struct in cell_pack().
This mistake causes two possible bugs. I believe they are both
harmless IRL.

BUG 1: memory stomping

When we call the memset, we are overwriting two 0 bytes past the end
of packed_cell_t.body. But I think that's harmless in practice,
because the definition of packed_cell_t is:

// ...
typedef struct packed_cell_t {
  TOR_SIMPLEQ_ENTRY(packed_cell_t) next;
  char body[CELL_MAX_NETWORK_SIZE];
  uint32_t inserted_time;
} packed_cell_t;

So we will overwrite either two bytes of inserted_time, or two bytes
of padding, depending on how the platform handles alignment.

If we're overwriting padding, that's safe.

If we are overwriting the inserted_time field, that's also safe: In
every case where we call cell_pack() from connection_or.c, we ignore
the inserted_time field. When we call cell_pack() from relay.c, we
don't set or use inserted_time until right after we have called
cell_pack(). SO I believe we're safe in that case too.

BUG 2: memory exposure

The original reason for this memset was to avoid the possibility of
accidentally leaking uninitialized ram to the network. Now
remember, if wide_circ_ids is false on a connection, we shouldn't
actually be sending more than 512 bytes of packed_cell_t.body, so
these two bytes can only leak to the network if there is another bug
somewhere else in the code that sends more data than is correct.

Fortunately, in relay.c, where we allocate packed_cell_t in
packed_cell_new() , we allocate it with tor_malloc_zero(), which
clears the RAM, right before we call cell_pack. So those
packed_cell_t.body bytes can't leak any information.

That leaves the two calls to cell_pack() in connection_or.c, which
use stack-alocated packed_cell_t instances.

In or_handshake_state_record_cell(), we pass the cell's contents to
crypto_digest_add_bytes(). When we do so, we get the number of
bytes to pass using the same setting of wide_circ_ids as we passed
to cell_pack(). So I believe that's safe.

In connection_or_write_cell_to_buf(), we also use the same setting
of wide_circ_ids in both calls. So I believe that's safe too.

I introduced this bug with 1c0e87f6d8
back in 0.2.4.11-alpha; it is bug 22737 and CID 1401591
2017-06-27 10:47:20 -04:00
Nick Mathewson
1c64133cb3 Merge remote-tracking branch 'public/bug22516_029' into maint-0.2.9 2017-06-19 13:50:49 -04:00
Nick Mathewson
59f29970fa Permit the fchmod system call.
Fixes bug 22516; bugfix on 0.2.5.4-alpha.
2017-06-16 14:03:02 -04:00
Nick Mathewson
cd7d006e08 Merge branch 'maint-0.2.8' into maint-0.2.9 2017-06-09 09:58:46 -04:00
Nick Mathewson
307be8d4a7 Merge branch 'maint-0.2.7-redux' into maint-0.2.8 2017-06-09 09:58:45 -04:00
Nick Mathewson
24ee8595bf Merge branch 'maint-0.2.6' into maint-0.2.7-redux 2017-06-09 09:58:45 -04:00
Nick Mathewson
3913f959e3 Merge branch 'maint-0.2.5' into maint-0.2.6 2017-06-09 09:58:45 -04:00
Nick Mathewson
325c507a09 Merge branch 'maint-0.2.4' into maint-0.2.5 2017-06-09 09:58:45 -04:00
Karsten Loesing
104e8fa751 Update geoip and geoip6 to the June 8 2017 database. 2017-06-09 15:47:49 +02:00
Nick Mathewson
875b1fbfba Merge branch 'maint-0.2.8' into maint-0.2.9 2017-06-08 14:06:28 -04:00
Nick Mathewson
6e90d75061 Merge branch 'maint-0.2.7-redux' into maint-0.2.8 2017-06-08 14:06:16 -04:00
Nick Mathewson
2f6be06f6a Merge branch 'maint-0.2.6' into maint-0.2.7-redux
"ours" merge to avoid version bump.
2017-06-08 14:06:06 -04:00
Nick Mathewson
eb92d11f53 Merge branch 'maint-0.2.5' into maint-0.2.6
"ours" merge to avoid version bump.
2017-06-08 14:05:59 -04:00
Nick Mathewson
1a7af7470f Merge branch 'maint-0.2.4' into maint-0.2.5
"ours" merge to avoid version bump.
2017-06-08 14:05:37 -04:00
Nick Mathewson
5e554215dd Add -dev to version number. 2017-06-08 14:05:27 -04:00
Nick Mathewson
5c47b92747 Add -dev to version number. 2017-06-08 14:05:22 -04:00
Nick Mathewson
44c8cb986d Add -dev to version number. 2017-06-08 14:05:18 -04:00
Nick Mathewson
95a88f7283 Add -dev to version number. 2017-06-08 14:05:16 -04:00
Nick Mathewson
f3804f5999 Add -dev to version number. 2017-06-08 14:05:13 -04:00
Nick Mathewson
ec3ce773ad Add -dev to version number. 2017-06-08 14:05:08 -04:00
Nick Mathewson
8239af0d9c Merge branch 'maint-0.2.8' into maint-0.2.9
"ours" merge to avoid version bump.
2017-06-08 09:29:12 -04:00
Nick Mathewson
bff08ed8eb Merge branch 'maint-0.2.7-redux' into maint-0.2.8
"ours" merge to avoid version bump.
2017-06-08 09:29:05 -04:00
Nick Mathewson
4915d9c5a7 Merge branch 'maint-0.2.6' into maint-0.2.7-redux
"ours" merge to avoid version bump.
2017-06-08 09:28:54 -04:00
Nick Mathewson
b796ad0300 Merge branch 'maint-0.2.5' into maint-0.2.6
"ours" merge to avoid version bump.
2017-06-08 09:28:29 -04:00
Nick Mathewson
77c5d8c738 Merge branch 'maint-0.2.4' into maint-0.2.5
"ours" merge to avoid version bump.
2017-06-08 09:28:11 -04:00
Nick Mathewson
792931d53d Bump to 0.2.8.14 2017-06-08 09:27:54 -04:00
Nick Mathewson
2efe0275bc Bump to 0.2.7.8 2017-06-08 09:27:34 -04:00
Nick Mathewson
0de4620375 Bump to 0.2.6.12 2017-06-08 09:26:20 -04:00
Nick Mathewson
fa73f59ad3 bump to 0.2.5.14 2017-06-08 09:26:00 -04:00
Nick Mathewson
8e439a66f3 Bump to 0.2.4.29 2017-06-08 09:25:31 -04:00
Nick Mathewson
b533220249 bump to 0.2.9.11 2017-06-08 09:24:38 -04:00
Nick Mathewson
d15d09a968 Merge branch 'maint-0.2.7-redux' into maint-0.2.8 2017-06-08 09:21:15 -04:00
Nick Mathewson
c1646d6e89 Merge branch 'maint-0.2.6' into maint-0.2.7-redux 2017-06-08 09:21:15 -04:00
Nick Mathewson
40bccc2004 Merge branch 'maint-0.2.5' into maint-0.2.6 2017-06-08 09:21:15 -04:00
Nick Mathewson
dec7998f5c Merge branch 'maint-0.2.4' into maint-0.2.5 2017-06-08 09:21:15 -04:00
Nick Mathewson
987c7cae70 Merge branch 'maint-0.2.8' into maint-0.2.9 2017-06-08 09:21:15 -04:00
David Goulet
56a7c5bc15 TROVE-2017-005: Fix assertion failure in connection_edge_process_relay_cell
On an hidden service rendezvous circuit, a BEGIN_DIR could be sent
(maliciously) which would trigger a tor_assert() because
connection_edge_process_relay_cell() thought that the circuit is an
or_circuit_t but is an origin circuit in reality.

Fixes #22494

Reported-by: Roger Dingledine <arma@torproject.org>
Signed-off-by: David Goulet <dgoulet@torproject.org>
2017-06-08 09:21:10 -04:00