This time, set the SSL3_FLAGS_ALLOW_UNSAFE_RENEGOTIATION flag on every
version before OpenSSL 0.9.8l. I can confirm that the option value (0x0010)
wasn't reused until OpenSSL 1.0.0beta3.
Tor has tor_lookup_hostname(), which prefers ipv4 addresses automatically.
Bug 1244 occured because gethostbyname() returned an ipv6 address, which
Tor cannot handle currently. Fixes bug 1244; bugfix on 0.0.2pre25.
Reported by Mike Mestnik.
The problem was that we didn't allocate enough memory on 32-bit
platforms with 64-bit time_t. The memory leak occured every time
we fetched a hidden service descriptor we've fetched before.
For most linking setups, this doesn't matter. But for some setups, when
statically linking openssl, it does matter, since you need to link things
with dependencies before you link things they depend on.
Fix for bug 1237.
In brief: you mustn't use the SSL3_FLAG solution with anything but 0.9.8l,
and you mustn't use the SSL_OP solution with anything before 0.9.8m, and
you get in _real_ trouble if you try to set the flag in 1.0.0beta, since
they use it for something different.
For the ugly version, see my long comment in tortls.c
We need to do this because Apple doesn't update its dev-tools headers
when it updates its libraries in a security patch. On the bright
side, this might get us out of shipping a statically linked OpenSSL on
OSX.
May fix bug 1225.
[backported]
We were checking for msg==NULL, but not lib or proc. This case can
only occur if we have an error whose string we somehow haven't loaded,
but it's worth coding defensively here.
Spotted by rieo on IRC.
this case can now legitimately happen, if you have a cached v2 status
from moria1, and you run with the new list of dirservers that's missing
the old moria1. it's nothing to worry about; the file will die off in
a month or two.
It turns out that OpenSSL 0.9.8m is likely to take a completely
different approach for reenabling renegotiation than OpenSSL 0.9.8l
did, so we need to work with both. :p Fixes bug 1158.
(patch by coderman; commit message by nickm)
Avoid crashing if the client is trying to upload many bytes and the
circuit gets torn down at the same time, or if the flip side
happens on the exit relay. Bugfix on 0.2.0.1-alpha; fixes bug 1150.
* debian-merge: (37 commits)
New upstream version
bump to 0.2.1.20
Move moria1 and Tonga to alternate IP addresses.
read the "circwindow" parameter from the consensus
Code to parse and access network parameters.
Revert "Teach connection_ap_can_use_exit about Exclude*Nodes"
Work around a memory leak in openssl 0.9.8g (and maybe others)
Teach connection_ap_can_use_exit about Exclude*Nodes
make some bug 1090 warnings go away
Fix a memory leak when parsing a ns
Fix obscure 64-bit big-endian hidserv bug
turns out the packaging changes aren't in 0.2.1.20
update changelog with bundle details
Use an _actual_ fix for the byte-reverse warning.
Use a simpler fix for the byte-reversing warning
Fix compile warnings on Snow Leopard
Add getinfo accepted-server-descriptor. Clean spec.
Reduce log level for bug case that we now know really exists.
Only send reachability status events on overall success/failure
update the README instructions and OS X makefiles
...
* commit 'tor-0.2.1.20': (36 commits)
bump to 0.2.1.20
Move moria1 and Tonga to alternate IP addresses.
read the "circwindow" parameter from the consensus
Code to parse and access network parameters.
Revert "Teach connection_ap_can_use_exit about Exclude*Nodes"
Work around a memory leak in openssl 0.9.8g (and maybe others)
Teach connection_ap_can_use_exit about Exclude*Nodes
make some bug 1090 warnings go away
Fix a memory leak when parsing a ns
Fix obscure 64-bit big-endian hidserv bug
turns out the packaging changes aren't in 0.2.1.20
update changelog with bundle details
Use an _actual_ fix for the byte-reverse warning.
Use a simpler fix for the byte-reversing warning
Fix compile warnings on Snow Leopard
Add getinfo accepted-server-descriptor. Clean spec.
Reduce log level for bug case that we now know really exists.
Only send reachability status events on overall success/failure
update the README instructions and OS X makefiles
Avoid segfault when accessing hidden service.
...
To fix a major security problem related to incorrect use of
SSL/TLS renegotiation, OpenSSL has turned off renegotiation by
default. We are not affected by this security problem, however,
since we do renegotiation right. (Specifically, we never treat a
renegotiated credential as authenticating previous communication.)
Nevertheless, OpenSSL's new behavior requires us to explicitly
turn renegotiation back on in order to get our protocol working
again.
Amusingly, this is not so simple as "set the flag when you create
the SSL object" , since calling connect or accept seems to clear
the flags.
For belt-and-suspenders purposes, we clear the flag once the Tor
handshake is done. There's no way to exploit a second handshake
either, but we might as well not allow it.
The first happens on an error case when a controller wants an
impossible directory object. The second happens when we can't write
our fingerprint file.
The code for these was super-wrong, but will only break things when we
reset an option on a platform where sizeof(time_t) is different from
sizeof(int).
To further attempt to fix bug 1090, make sure connection_ap_can_use_exit
always returns 0 when the chosen exit router is excluded. This should fix
bug1090.
When we excluded some Exits, we were sometimes warning the user that we
were going to use the node regardless. Many of those warnings were in
fact bogus, because the relay in question was not used to connect to
the outside world.
Based on patch by Rotor, thanks!
Adding the same vote to a networkstatus consensus leads to a memory leak
on the client side. Fix that by only using the first vote from any given
voter, and ignoring the others.
Problem found by Rotor, who also helped writing the patch. Thanks!
Fix an obscure bug where hidden services on 64-bit big-endian
systems might mis-read the timestamp in v3 introduce cells, and
refuse to connect back to the client. Discovered by "rotor".
Bugfix on 0.2.1.6-alpha.
