In the event of an error in the HMAC function, leaks can occur because the
HMAC_CTX does not get cleaned up.
Thanks to the BoringSSL project for reporting this issue.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit e43a13c807e42688c72c4f3d001112bf0a110464)
The function EC_POINT_is_on_curve does not return a boolean value.
It returns 1 if the point is on the curve, 0 if it is not, and -1
on error. Many usages within OpenSSL were incorrectly using this
function and therefore not correctly handling error conditions.
With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 68886be7e2cd395a759fcd41d2cede461b68843d)
This adds additional checks to the processing of extensions in a ClientHello
to ensure that either no extensions are present, or if they are then they
take up the exact amount of space expected.
With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: Stephen Henson <steve@openssl.org>
Conflicts:
ssl/t1_lib.c
This fixes a memory leak that can occur whilst duplicating a BIO chain if
the call to CRYPTO_dup_ex_data() fails. It also fixes a second memory leak
where if a failure occurs after successfully creating the first BIO in the
chain, then the beginning of the new chain was not freed.
With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: Stephen Henson <steve@openssl.org>
Conflicts:
crypto/bio/bio_lib.c
BUF_MEM_free() attempts to cleanse memory using memset immediately prior
to a free. This is at risk of being optimised away by the compiler, so
replace with a call to OPENSSL_cleanse() instead.
With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: Stephen Henson <steve@openssl.org>
For librypto to be complete, the stuff in both crypto/ and engines/
have to be built. Doing 'make test' or 'make apps' from a clean
source tree failed to do so.
Corrected by using the new 'build_libcrypto' in the top Makefile.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit acaff3b797f50a0a0e17a0be45b7fafad962004e)
There's a need for a target that will build all of libcrypto, so let's
add 'build_libcrypto' that does this. For ortogonality, let's also
add 'build_libssl'. Have both also depend on 'libcrypto.pc' and
'libssl.pc' so those get built together with the libraries.
This makes 'all' depend on fewer things directly.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 177b5f9c82e1152d6ce20a83556db629697fff65)
Conflicts:
Makefile.org
Pointed out by Victor Vasiliev (vasilvv@mit.edu) via Adam Langley
(Google).
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 1e4a355dcabe2f75df5bb8b41b394d37037169d2)
At least in the case of SSLv3 we can't send an extention.
Reviewed-by: Matt Caswell <matt@openssl.org>
MR #811
(cherry picked from commit 3c06513f3833d4692f620e2c03d7a840871c08a7)
Remove a comment that suggested further clean up was required.
DH_free() performs the necessary cleanup.
With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f3d889523ee84f1e87e4da0d59e2702a4bee7907)
Ensure OPENSSL_cleanse() is called on the premaster secret value calculated for GOST.
With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit b7ee4815f2452c854cc859e8dda88f2673cdddea)
Conflicts:
ssl/s3_srvr.c
Ensure the Kerberos pre-master secret has OPENSSL_cleanse called on it.
With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: Rich Salz <rsalz@openssl.org>
A BIGNUM can have the value of -0. The function BN_bn2hex fails to account
for this and can allocate a buffer one byte too short in the event of -0
being used, leading to a one byte buffer overrun. All usage within the
OpenSSL library is considered safe. Any security risk is considered
negligible.
With thanks to Mateusz Kocielski (LogicalTrust), Marek Kroemeke and
Filip Palian for discovering and reporting this issue.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit c56353071d9849220714d8a556806703771b9269)
Conflicts:
crypto/bn/bn_print.c
The session object on the client side is initially created during
construction of the ClientHello. If the client is DTLS1.2 capable then it
will store 1.2 as the version for the session. However if the server is only
DTLS1.0 capable then when the ServerHello comes back the client switches to
using DTLS1.0 from then on. However the session version does not get
updated. Therefore when the client attempts to resume that session the
server throws an alert because of an incorrect protocol version.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 7322abf5cefdeb47c7d61f3b916c428bf2cd69b6)
Conflicts:
ssl/s3_clnt.c
Some tool chains (e.g. android) do not define IP_PMTUDISC_PROBE, and so
this build breaks.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 133dce447b259e0bb93076bf5fd0ce475d16910a)
objects.pl only looked for a space to see if the name could be
used as a C identifier. Improve the test to match the real C
rules.
Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 591b7aef05b22cba09b179e5787a9bf40dfc9508)
This is for consistency.
Additionally, have its presence define OPENSSL_SYS_WINDOWS as well.
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 3f131556d6678bc3754f1e6d98a9a5bfc24e368c)
Conflicts:
e_os2.h
The code in bss_dgram.c checks if IP_MTUDISCOVER is defined, where it
should test for IP_MTU_DISCOVER
RT#3888
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 0baaff1a76d4c91b9c1121059be63175454d7b03)
If a NewSessionTicket is received by a multi-threaded client when
attempting to reuse a previous ticket then a race condition can occur
potentially leading to a double free of the ticket data.
CVE-2015-1791
This also fixes RT#3808 where a session ID is changed for a session already
in the client session cache. Since the session ID is the key to the cache
this breaks the cache access.
Parts of this patch were inspired by this Akamai change:
c0bf69a791
Reviewed-by: Rich Salz <rsalz@openssl.org>
dtls1_get_message has an |mt| variable which is the type of the message that
is being requested. If it is negative then any message type is allowed.
However the value of |mt| is not checked in one of the main code paths, so a
peer can send a message of a completely different type and it will be
processed as if it was the message type that we were expecting. This has
very little practical consequences because the current behaviour will still
fail when the format of the message isn't as expected.
Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit 8c2b1d872b25f3ec78e04f5cd2de8f21e853c4a6)
Also add more ciphersuite test coverage, and a negative test for
512-bit DHE.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 1ee85aab75d7c9f20058f781bfe9222323df08eb)
The size of the SRP extension can never be negative (the variable
|size| is unsigned). Therefore don't check if it is less than zero.
RT#3862
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 9c89d290834f3ed9146eeb8b64fe5de817679a0b)
The return value of i2d functions can be negative if an error occurs.
Therefore don't assign the return value to an unsigned type and *then*
check if it is negative.
RT#3862
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 90e7cdff3aa66779486914f88333f6601f0c1cf4)
The members of struct timeval on OpenVMS are unsigned. The logic for
calculating timeouts needs adjusting to deal with this.
RT#3862
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit fc52ac9028b9492fb086ba35a3352ea46e03ecfc)
If the record received is for a version that we don't support, previously we
were sending an alert back. However if the incoming record already looks
like an alert then probably we shouldn't do that. So suppress an outgoing
alert if it looks like we've got one incoming.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
bn_get_bits5 was overstepping array boundary by 1 byte. It was exclusively
read overstep and data could not have been used. The only potential problem
would be if array happens to end on the very edge of last accesible page.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 69567687b0b7ed67831c17a010f4d46dfd059aef)
BLKINIT optimization worked on T4, but for some reason appears "too
aggressive" for T3 triggering intermiitent EC failures. It's not clear
why only EC is affected...
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 579734ced696125c0768a2f4e56e97939b0e6e49)
The update: target in engines/ didn't recurse into engines/ccgost.
The update: and depend: targets in engines/ccgost needed a fixup.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 8b822d2566853ee5e313c37529f71336209b28ab)
We had updates of certain header files in both Makefile.org and the
Makefile in the directory the header file lived in. This is error
prone and also sometimes generates slightly different results (usually
just a comment that differs) depending on which way the update was
done.
This removes the file update targets from the top level Makefile, adds
an update: target in all Makefiles and has it depend on the depend: or
local_depend: targets, whichever is appropriate, so we don't get a
double run through the whole file tree.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 0f539dc1a2f45580435c39dada44dd276e79cb88)
Conflicts:
Makefile.org
apps/Makefile
test/Makefile
The certificate masks are used to select which ciphersuite we are going to
use. The variables |emask_k| and |emask_a| relate to export grade key
exchange and authentication respecitively. The variables |mask_k| and
|mask_a| are the equivalent versions for non-export grade. This fixes an
instance where the two usages of export/non-export were mixed up. In
practice it makes little difference since it still works!
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit fdfe8b06ae97da3bc3a77aa3db00f8e0445f3c70)
Remove support for the two export grade static DH ciphersuites. These two
ciphersuites were newly added (along with a number of other static DH
ciphersuites) to 1.0.2. However the two export ones have *never* worked
since they were introduced. It seems strange in any case to be adding new
export ciphersuites, and given "logjam" it also does not seem correct to
fix them.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 13f8eb4730b9fc039e743870f81e5ff54b3d05b8)
Conflicts:
CHANGES
If BN_rand is called with |bits| set to 1 and |top| set to 1 then a 1 byte
buffer overflow can occur. There are no such instances within the OpenSSL at
the moment.
Thanks to Mateusz Kocielski (LogicalTrust), Marek Kroemeke, Filip Palian for
discovering and reporting this issue.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
The functions BN_rshift and BN_lshift shift their arguments to the right or
left by a specified number of bits. Unpredicatable results (including
crashes) can occur if a negative number is supplied for the shift value.
Thanks to Mateusz Kocielski (LogicalTrust), Marek Kroemeke and Filip Palian
for discovering and reporting this issue.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 7cc18d8158b5fc2676393d99b51c30c135502107)
Conflicts:
crypto/bn/bn.h
crypto/bn/bn_err.c
If a client receives a bad hello request in DTLS then the alert is not
sent correctly.
RT#2801
Signed-off-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 4dc1aa0436fdb8af50960db676b739c8ef81f38c)
