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73 commits

Author SHA1 Message Date
Manuel Pégourié-Gonnard f0b469e42b Merge branch 'mbedtls-2.16' into mbedtls-2.16-restricted
* mbedtls-2.16: (32 commits)
  A different approach of signed-to-unsigned comparison
  Fix bug in redirection of unit test outputs
  Don't forget to free G, P, Q, ctr_drbg, and entropy
  Backport e2k support to mbedtls-2.7
  compat.sh: stop using allow_sha1
  compat.sh: quit using SHA-1 certificates
  compat.sh: enable CBC-SHA-2 suites for GnuTLS
  Fix license header in pre-commit hook
  Update copyright notices to use Linux Foundation guidance
  Fix building on NetBSD 9.0
  Remove obsolete buildbot reference in compat.sh
  Fix misuse of printf in shell script
  Fix added proxy command when IPv6 is used
  Simplify test syntax
  Fix logic error in setting client port
  ssl-opt.sh: include test name in log files
  ssl-opt.sh: remove old buildbot-specific condition
  ssl-opt.sh: add proxy to all DTLS tests
  Log change as bugfix
  Add changelog entry
  ...
2020-08-25 10:58:15 +02:00
Bence Szépkúti a2947ac7bb Update copyright notices to use Linux Foundation guidance
As a result, the copyright of contributors other than Arm is now
acknowledged, and the years of publishing are no longer tracked in the
source files.

Also remove the now-redundant lines declaring that the files are part of
MbedTLS.

This commit was generated using the following script:

# ========================
#!/bin/sh

# Find files
find '(' -path './.git' -o -path './3rdparty' ')' -prune -o -type f -print | xargs sed -bi '

# Replace copyright attribution line
s/Copyright.*Arm.*/Copyright The Mbed TLS Contributors/I

# Remove redundant declaration and the preceding line
$!N
/This file is part of Mbed TLS/Id
P
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# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-08-19 16:37:36 +02:00
Gilles Peskine 6579235d9c x509_crl_parse: fix 1-byte buffer overflow and entry->raw.tag
In the entries (mbedtls_x509_crl_entry values) on the list constructed
by mbedtls_x509_crl_parse_der(), set entry->raw.tag to
(SEQUENCE | CONSTRUCTED) rather than to the tag of the first ASN.1
element of the entry (which happens to be the tag of the serial
number, so INTEGER or INTEGER | CONTEXT_SPECIFIC). This is doesn't
really matter in practice (and in particular the value is never used
in Mbed TLS itself), and isn't documented, but at least it's
consistent with how mbedtls_x509_buf is normally used.

The primary importance of this change is that the old code tried to
access the tag of the first element of the entry even when the entry
happened to be empty. If the entry was empty and not followed by
anything else in the CRL, this could cause a read 1 byte after the end
of the buffer containing the CRL.

The test case "X509 CRL ASN1 (TBSCertList, single empty entry at end)"
hit the problematic buffer overflow, which is detected with ASan.

Credit to OSS-Fuzz for detecting the problem.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-08-12 12:50:42 +02:00
Bence Szépkúti f744bd72ee Update license headers to Apache-2.0 OR GPL-2.0-or-later
This will allow us to ship the LTS branches in a single archive

This commit was generated using the following script:

# ========================
#!/bin/sh

header1='\ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later\
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 *  This file is provided under the Apache License 2.0, or the\
 *  GNU General Public License v2.0 or later.\
 *\
 *  **********\
 *  Apache License 2.0:\
 *\
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may\
 *  not use this file except in compliance with the License.\
 *  You may obtain a copy of the License at\
 *\
 *  http://www.apache.org/licenses/LICENSE-2.0\
 *\
 *  Unless required by applicable law or agreed to in writing, software\
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\
 *  See the License for the specific language governing permissions and\
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 *\
 *  **********\
 *\
 *  **********\
 *  GNU General Public License v2.0 or later:\
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 *  This program is free software; you can redistribute it and/or modify\
 *  it under the terms of the GNU General Public License as published by\
 *  the Free Software Foundation; either version 2 of the License, or\
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 *\
 *  This program is distributed in the hope that it will be useful,\
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of\
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 *\
 *  You should have received a copy of the GNU General Public License along\
 *  with this program; if not, write to the Free Software Foundation, Inc.,\
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\
 *\
 *  **********'

find -path './.git' -prune -o '(' -name '*.c' -o -name '*.cpp' -o -name '*.fmt' -o -name '*.h' ')' -print | xargs sed -i "
# Normalize the first line of the copyright headers (no text on the first line of a block comment)
/^\/\*.*Copyright.*Arm/I s/\/\*/&\n */

# Insert new copyright header
/SPDX-License-Identifier/ i\
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# Delete old copyright header
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# Format copyright header for inclusion into scripts
header2=$(echo "$header1" | sed 's/^\\\? \* \?/#/')

find -path './.git' -prune -o '(' -name '*.gdb' -o -name '*.pl' -o -name '*.py' -o -name '*.sh' ')' -print | xargs sed -i "
# Insert new copyright header
/SPDX-License-Identifier/ i\
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# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-06-15 12:48:48 +02:00
Hanno Becker 2f472140f9 Always return a high-level error code from X.509 module
Some functions within the X.509 module return an ASN.1 low level
error code where instead this error code should be wrapped by a
high-level X.509 error code as in the bulk of the module.

Specifically, the following functions are affected:
- mbedtls_x509_get_ext()
- x509_get_version()
- x509_get_uid()

This commit modifies these functions to always return an
X.509 high level error code.

Care has to be taken when adapting `mbetls_x509_get_ext()`:
Currently, the callers `mbedtls_x509_crt_ext()` treat the
return code `MBEDTLS_ERR_ASN1_UNEXPECTED_TAG` specially to
gracefully detect and continue if the extension structure is not
present. Wrapping the ASN.1 error with
`MBEDTLS_ERR_X509_INVALID_EXTENSIONS` and adapting the check
accordingly would mean that an unexpected tag somewhere
down the extension parsing would be ignored by the caller.

The way out of this is the following: Luckily, the extension
structure is always the last field in the surrounding structure,
so if there is some data remaining, it must be an Extension
structure, so we don't need to deal with a tag mismatch gracefully
in the first place.

We may therefore wrap the return code from the initial call to
`mbedtls_asn1_get_tag()` in `mbedtls_x509_get_ext()` by
`MBEDTLS_ERR_X509_INVALID_EXTENSIONS` and simply remove
the special treatment of `MBEDTLS_ERR_ASN1_UNEXPECTED_TAG`
in the callers `x509_crl_get_ext()` and `x509_crt_get_ext()`.

This renders `mbedtls_x509_get_ext()` unsuitable if it ever
happened that an Extension structure is optional and does not
occur at the end of its surrounding structure, but for CRTs
and CRLs, it's fine.

The following tests need to be adapted:
- "TBSCertificate v3, issuerID wrong tag"
  The issuerID is optional, so if we look for its presence
  but find a different tag, we silently continue and try
  parsing the subjectID, and then the extensions. The tag '00'
  used in this test doesn't match either of these, and the
  previous code would hence return LENGTH_MISMATCH after
  unsucessfully trying issuerID, subjectID and Extensions.
  With the new code, any data remaining after issuerID and
  subjectID _must_ be Extension data, so we fail with
  UNEXPECTED_TAG when trying to parse the Extension data.
- "TBSCertificate v3, UIDs, invalid length"
  The test hardcodes the expectation of
  MBEDTLS_ERR_ASN1_INVALID_LENGTH, which needs to be
  wrapped in MBEDTLS_ERR_X509_INVALID_FORMAT now.

Fixes #2431.
2019-06-04 14:01:10 +01:00
Hanno Becker 4e1bfc19cc Obey bounds of ASN.1 substructures
When parsing a substructure of an ASN.1 structure, no field within
the substructure must exceed the bounds of the substructure.
Concretely, the `end` pointer passed to the ASN.1 parsing routines
must be updated to point to the end of the substructure while parsing
the latter.

This was previously not the case for the routines
- x509_get_attr_type_and_value(),
- mbedtls_x509_get_crt_ext(),
- mbedtls_x509_get_crl_ext().
These functions kept using the end of the parent structure as the
`end` pointer and would hence allow substructure fields to cross
the substructure boundary. This could lead to successful parsing
of ill-formed X.509 CRTs.

This commit fixes this.

Care has to be taken when adapting `mbedtls_x509_get_crt_ext()`
and `mbedtls_x509_get_crl_ext()`, as the underlying function
`mbedtls_x509_get_ext()` returns `0` if no extensions are present
but doesn't set the variable which holds the bounds of the Extensions
structure in case the latter is present. This commit addresses
this by returning early from `mbedtls_x509_get_crt_ext()` and
`mbedtls_x509_get_crl_ext()` if parsing has reached the end of
the input buffer.

The following X.509 parsing tests need to be adapted:
- "TBSCertificate, issuer two inner set datas"
  This test exercises the X.509 CRT parser with a Subject name
  which has two empty `AttributeTypeAndValue` structures.
  This is supposed to fail with `MBEDTLS_ERR_ASN1_OUT_OF_DATA`
  because the parser should attempt to parse the first structure
  and fail because of a lack of data. Previously, it failed to
  obey the (0-length) bounds of the first AttributeTypeAndValue
  structure and would try to interpret the beginning of the second
  AttributeTypeAndValue structure as the first field of the first
  AttributeTypeAndValue structure, returning an UNEXPECTED_TAG error.
- "TBSCertificate, issuer, no full following string"
  This test exercises the parser's behaviour on an AttributeTypeAndValue
  structure which contains more data than expected; it should therefore
  fail with MBEDTLS_ERR_ASN1_LENGTH_MISMATCH. Because of the missing bounds
  check, it previously failed with UNEXPECTED_TAG because it interpreted
  the remaining byte in the first AttributeTypeAndValue structure as the
  first byte in the second AttributeTypeAndValue structure.
- "SubjectAltName repeated"
  This test should exercise two SubjectAltNames extensions in succession,
  but a wrong length values makes the second SubjectAltNames extension appear
  outside of the Extensions structure. With the new bounds in place, this
  therefore fails with a LENGTH_MISMATCH error. This commit adapts the test
  data to put the 2nd SubjectAltNames extension inside the Extensions
  structure, too.
2019-06-04 14:01:10 +01:00
Andres Amaya Garcia 1f6301b3c8 Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
Andres Amaya Garcia e32df087fb Remove individual copies of mbedtls_zeroize()
This commit removes all the static occurrencies of the function
mbedtls_zeroize() in each of the individual .c modules. Instead the
function has been moved to utils.h that is included in each of the
modules.
2018-04-17 09:19:05 -05:00
Manuel Pégourié-Gonnard fd3e4fbae7 x509: CRL: reject unsupported critical extensions 2018-03-14 09:15:02 +01:00
Andres Amaya Garcia c9d6226d2c Change formatting of allocation check in x509_crl 2018-01-23 19:37:44 +00:00
Andres Amaya Garcia cb5123fa86 Ensure memcpy is not called with NULL and 0 args in x509 module 2018-01-23 19:37:44 +00:00
Andres Amaya Garcia f1ee63562a Style fixes in pem, x509_crl and buf_alloc 2018-01-23 19:37:44 +00:00
Andres AG 9cf1f96a7b Fix corner case uses of memory_buffer_alloc.c
The corner cases fixed include:
    * Allocating a buffer of size 0. With this change, the allocator now
      returns a NULL pointer in this case. Note that changes in pem.c and
      x509_crl.c were required to fix tests that did not work under this
      assumption.
    * Initialising the allocator with less memory than required for headers.
    * Fix header chain checks for uninitialised allocator.
2018-01-23 19:37:44 +00:00
Andres AG 4f753c1186 Fix potential integer overflow parsing DER CRL
This patch prevents a potential signed integer overflow during the
CRL version verification checks.
2017-07-27 21:44:34 +01:00
Andres AG 5708dcb368 Fix memory leak in mbedtls_x509_crl_parse()
The memory leak call was caused by missing calls to mbedtls_pem_free()
when a MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was
encountered.
2017-02-28 14:51:31 +00:00
Andres AG 939954c0b0 Fix CRL parsing to avoid infinite loop
This patch modifies the function mbedtls_x509_crl_parse() to ensure
that a CRL in PEM format with trailing characters after the footer does
not result in the execution of an infinite loop.
2017-01-19 16:43:48 +00:00
Simon Butcher 97e829038a Fixes whitespace errors in x509_crl.c 2016-05-23 14:29:32 +01:00
Manuel Pégourié-Gonnard 37ff14062e Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
Manuel Pégourié-Gonnard 6fb8187279 Update date in copyright line 2015-07-28 17:11:58 +02:00
Manuel Pégourié-Gonnard 1685368408 Rationalize snprintf() usage in X.509 modules 2015-06-22 14:42:04 +02:00
Manuel Pégourié-Gonnard 6a8ca33fa5 Rename ERR_xxx_MALLOC_FAILED to ..._ALLOC_FAILED 2015-05-28 16:25:05 +02:00
Manuel Pégourié-Gonnard 1b8de57827 Remove a few redundant memset after calloc.
Using the following semantic patch provided by Mansour Moufid:

@@
expression x;
@@
  x = mbedtls_calloc(...)
  ...
- memset(x, 0, ...);
2015-05-27 16:58:55 +02:00
Manuel Pégourié-Gonnard 7551cb9ee9 Replace malloc with calloc
- platform layer currently broken (not adapted yet)
- memmory_buffer_alloc too
2015-05-26 16:04:06 +02:00
Manuel Pégourié-Gonnard 0ece0f94f2 Fix checks for nul-termination 2015-05-12 12:43:54 +02:00
Manuel Pégourié-Gonnard 43b37cbc92 Fix use of pem_read_buffer() in PK, DHM and X509 2015-05-12 11:26:43 +02:00
Manuel Pégourié-Gonnard e36d56419e Merge branch 'mbedtls-1.3' into development
* mbedtls-1.3:
  fix bug in ssl_mail_client
  Adapt compat.sh to GnuTLS 3.4
  Fix undefined behaviour in x509

Conflicts:
	programs/ssl/ssl_mail_client.c
	tests/compat.sh
2015-04-30 13:52:25 +02:00
Manuel Pégourié-Gonnard 159c524df8 Fix undefined behaviour in x509 2015-04-30 11:21:18 +02:00
Manuel Pégourié-Gonnard 8408a94969 Remove MBEDTLS_ from internal macros 2015-04-09 13:52:55 +02:00
Manuel Pégourié-Gonnard 2cf5a7c98e The Great Renaming
A simple execution of tmp/invoke-rename.pl
2015-04-08 13:25:31 +02:00
Manuel Pégourié-Gonnard 1022fed36e Remove redundant sig_oid2 in x509 structures 2015-03-27 16:34:42 +01:00
Manuel Pégourié-Gonnard 7f8099773e Rename include directory to mbedtls 2015-03-10 11:23:56 +00:00
Manuel Pégourié-Gonnard fe44643b0e Rename website and repository 2015-03-06 13:17:10 +00:00
Manuel Pégourié-Gonnard 981732bb8e Fix missing/misplaced #include's 2015-02-17 15:47:31 +00:00
Mansour Moufid c531b4af3c Apply the semantic patch rm-malloc-cast.cocci.
for dir in library programs; do
        spatch --sp-file scripts/rm-malloc-cast.cocci --dir $dir \
        --in-place;
    done
2015-02-16 10:43:52 +00:00
Rich Evans fac657fd52 modify library/x509*.c to use polarssl_snprintf 2015-02-13 13:50:25 +00:00
Rich Evans 00ab47026b cleanup library and some basic tests. Includes, add guards to includes 2015-02-10 11:28:46 +00:00
Manuel Pégourié-Gonnard 860b51642d Fix url again 2015-01-28 17:12:07 +00:00
Manuel Pégourié-Gonnard 085ab040aa Fix website url to use https. 2015-01-23 11:06:27 +00:00
Manuel Pégourié-Gonnard 9698f5852c Remove maintainer line. 2015-01-23 10:59:00 +00:00
Manuel Pégourié-Gonnard 19f6b5dfaa Remove redundant "all rights reserved" 2015-01-23 10:54:00 +00:00
Manuel Pégourié-Gonnard a658a4051b Update copyright 2015-01-23 09:55:24 +00:00
Manuel Pégourié-Gonnard 967a2a5f8c Change name to mbed TLS in the copyright notice 2015-01-22 14:28:16 +00:00
Manuel Pégourié-Gonnard 9439f93ea4 Use pk_load_file() in X509
Saves a bit of ROM. X509 depends on PK anyway.
2014-11-27 17:44:46 +01:00
Manuel Pégourié-Gonnard 6ed2d92629 Make x509_crl_parse() iterative 2014-11-20 16:36:07 +01:00
Manuel Pégourié-Gonnard 426d4ae7ff Split x509_crl_parse_der() out of x509_crl_parse() 2014-11-20 16:36:07 +01:00
Manuel Pégourié-Gonnard e5b0fc1847 Make malloc-init script a bit happier 2014-11-13 12:42:12 +01:00
Manuel Pégourié-Gonnard 1c082f34f3 Update description and references for X.509 files 2014-06-23 11:52:59 +02:00
Paul Bakker 66d5d076f7 Fix formatting in various code to match spacing from coding style 2014-06-17 17:06:47 +02:00
Paul Bakker d8bb82665e Fix code styling for return statements 2014-06-17 14:06:49 +02:00
Paul Bakker 3461772559 Introduce polarssl_zeroize() instead of memset() for zeroization 2014-06-14 16:46:03 +02:00