Richard Levitte [Sun, 8 May 2016 15:01:09 +0000 (17:01 +0200)]
Restore the ERR_remove_thread_state() API and make it a no-op
The ERR_remove_thread_state() API is restored to take a pointer
argument, but does nothing more. ERR_remove_state() is also made into
a no-op. Both functions are deprecated and users are recommended to
use OPENSSL_thread_stop() instead.
David Benjamin [Sun, 6 Mar 2016 00:49:20 +0000 (19:49 -0500)]
Don't send signature algorithms when client_version is below TLS 1.2.
Per RFC 5246,
Note: this extension is not meaningful for TLS versions prior to 1.2.
Clients MUST NOT offer it if they are offering prior versions.
However, even if clients do offer it, the rules specified in [TLSEXT]
require servers to ignore extensions they do not understand.
Although second sentence would suggest that there would be no interop
problems in always offering the extension, WebRTC has reported issues
with Bouncy Castle on < TLS 1.2 ClientHellos that still include
signature_algorithms. See also
https://bugs.chromium.org/p/webrtc/issues/detail?id=4223
RT#4390
Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Stephen Henson <steve@openssl.org>
This patch fixes an issue which causes the 'openssl ca' commands to
fail if '-config' is not specified even if it says so otherwise.
Problem is that the default config is not loaded and the conf variable
is NULL which causes an exception.
Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Richard Levitte <levitte@openssl.org>
Richard Levitte [Sun, 8 May 2016 14:57:55 +0000 (16:57 +0200)]
VMS: support VERBOSE and V in descrip.mms
With Unixly Makefiles as well as with nmake, make variables are
transferred to the shell running the commands as envinronment
variables. This principle doesn't apply with MMS, so we must
explicitely define VERBOSE as commands when it's needed.
Matt Caswell [Thu, 5 May 2016 19:59:03 +0000 (20:59 +0100)]
Free any existing SRTP connection profile
When setting a new SRTP connection profile using
SSL_CTX_set_tlsext_use_srtp() or SSL_set_tlsext_use_srtp() we should
free any existing profile first to avoid a memory leak.
If environment variables are not explanded early enough, expanded
strings are passed with single backslash to C compiler, e.g.
C:\Program Files, which effectively results in OpenSSL looking for
engines and certificates in C:Program Files.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Matt Caswell [Tue, 3 May 2016 16:55:00 +0000 (17:55 +0100)]
Handle no async jobs in libssl
If the application has limited the size of the async pool using
ASYNC_init_thread() then we could run out of jobs while trying to start a
libssl io operation. However libssl was failing to handle this and treating
it like a fatal error. It should not be fatal...we just need to retry when
there are jobs available again.
Reviewed-by: Richard Levitte <levitte@openssl.org>
This demystifies two for-loops that do nothing. They were used to write
the ladder in a unified way. Now that the ladder is otherwise commented,
remove the dead loops.
Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org>
list -disabled was checking OPENSSL_NO_SSL/OPENSSL_NO_TLS, which are
not used to disable SSL/TLS respectively.
Building with these macros wrongly show as SSL/TLS disabled, hence
removing this code.
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org>
The name length limit check in x509_name_ex_d2i() includes
the containing structure as well as the actual X509_NAME. This will
cause large CRLs to be rejected.
Fix by limiting the length passed to ASN1_item_ex_d2i() which will
then return an error if the passed X509_NAME exceeds the length.
Matt Caswell [Wed, 4 May 2016 08:12:27 +0000 (09:12 +0100)]
Remove stale errors from early connection attempts in a client
The init_client() function in the apps sets up the client connection. It
may try multiple addresses until it finds one that works. We should clear
the error queue if we eventually get a successful connection because
otherwise we get stale errors hanging around. This can cause problems in
subsequent calls to SSL_get_error(), i.e. non-fatal NBIO events appear as
fatal.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Andy Polyakov [Mon, 2 May 2016 21:38:11 +0000 (23:38 +0200)]
Configurations/unix-Makefile.tmpl: don't count on -E -P.
Some non-Gnu compilers interpret -E -P combination differently.
some prioritize -E over -P, others -P over -E (in which case .i
file is generated and sometimes truncated because of redirection).
Reviewed-by: Richard Levitte <levitte@openssl.org>
Only treat an ASN1_ANY type as an integer if it has the V_ASN1_INTEGER
tag: V_ASN1_NEG_INTEGER is an internal only value which is never used
for on the wire encoding.
Thanks to David Benjamin <davidben@google.com> for reporting this bug.
Matt Caswell [Mon, 25 Apr 2016 08:06:29 +0000 (09:06 +0100)]
Ensure EVP_EncodeUpdate handles an output length that is too long
With the EVP_EncodeUpdate function it is the caller's responsibility to
determine how big the output buffer should be. The function writes the
amount actually used to |*outl|. However this could go negative with a
sufficiently large value for |inl|. We add a check for this error
condition.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Matt Caswell [Fri, 4 Mar 2016 10:17:17 +0000 (10:17 +0000)]
Avoid overflow in EVP_EncodeUpdate
An overflow can occur in the EVP_EncodeUpdate function which is used for
Base64 encoding of binary data. If an attacker is able to supply very large
amounts of input data then a length check can overflow resulting in a heap
corruption. Due to the very large amounts of data involved this will most
likely result in a crash.
Internally to OpenSSL the EVP_EncodeUpdate function is primarly used by the
PEM_write_bio* family of functions. These are mainly used within the
OpenSSL command line applications, so any application which processes
data from an untrusted source and outputs it as a PEM file should be
considered vulnerable to this issue.
User applications that call these APIs directly with large amounts of
untrusted data may also be vulnerable.
Issue reported by Guido Vranken.
CVE-2016-2105
Reviewed-by: Richard Levitte <levitte@openssl.org>
Matt Caswell [Thu, 28 Apr 2016 09:46:55 +0000 (10:46 +0100)]
Prevent EBCDIC overread for very long strings
ASN1 Strings that are over 1024 bytes can cause an overread in
applications using the X509_NAME_oneline() function on EBCDIC systems.
This could result in arbitrary stack data being returned in the buffer.
Matt Caswell [Thu, 3 Mar 2016 23:36:23 +0000 (23:36 +0000)]
Fix encrypt overflow
An overflow can occur in the EVP_EncryptUpdate function. If an attacker is
able to supply very large amounts of input data after a previous call to
EVP_EncryptUpdate with a partial block then a length check can overflow
resulting in a heap corruption.
Following an analysis of all OpenSSL internal usage of the
EVP_EncryptUpdate function all usage is one of two forms.
The first form is like this:
EVP_EncryptInit()
EVP_EncryptUpdate()
i.e. where the EVP_EncryptUpdate() call is known to be the first called
function after an EVP_EncryptInit(), and therefore that specific call
must be safe.
The second form is where the length passed to EVP_EncryptUpdate() can be
seen from the code to be some small value and therefore there is no
possibility of an overflow.
Since all instances are one of these two forms, I believe that there can
be no overflows in internal code due to this problem.
It should be noted that EVP_DecryptUpdate() can call EVP_EncryptUpdate()
in certain code paths. Also EVP_CipherUpdate() is a synonym for
EVP_EncryptUpdate(). Therefore I have checked all instances of these
calls too, and came to the same conclusion, i.e. there are no instances
in internal usage where an overflow could occur.
This could still represent a security issue for end user code that calls
this function directly.
Rich Salz [Mon, 2 May 2016 21:03:55 +0000 (17:03 -0400)]
GH875: Document -no_check_time
Date: Tue Mar 15 15:19:44 2016 +0100
This commit updates the documentation of cms, ocsp, s_client,
s_server, and verify to reflect the new "-no_check_time"
option introduced in commit d35ff2c0ade0a12e84aaa2e9841b4983a2f3cf45
on 2015-07-31.
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org>
TJ Saunders [Wed, 23 Mar 2016 18:55:53 +0000 (11:55 -0700)]
Issue #719:
If no serverinfo extension is found in some cases, do not abort the handshake,
but simply omit/skip that extension.
Check for already-registered serverinfo callbacks during serverinfo
registration.
Update SSL_CTX_use_serverinfo() documentation to mention the need to reload the
same serverinfo per certificate, for servers with multiple server certificates.
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org>
Todd Short [Mon, 11 Apr 2016 20:03:42 +0000 (16:03 -0400)]
Secure memory fixes
Fix some of the variables to be (s)size_t, so that more than 1GB of
secure memory can be allocated. The arena has to be a power of 2, and
2GB fails because it ends up being a negative 32-bit signed number.
The |too_late| flag is not strictly necessary; it is easy to figure
out if something is secure memory by looking at the arena. As before,
secure memory allocations will not fail, but now they can be freed
correctly. Once initialized, secure memory can still be used, even if
allocations occured before initialization.
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org>
Andy Polyakov [Sun, 1 May 2016 12:09:15 +0000 (14:09 +0200)]
chacha/asm/chacha-x86.pl: make it compile on legacy systems.
Usage of $ymm variable is a bit misleading here, it doesn't refer
to %ymm register bank, but rather to VEX instruction encoding,
which AMD XOP code path depends on.
Reviewed-by: Richard Levitte <levitte@openssl.org>