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mbedtls/library
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Hanno Becker 59c92ed89b ECP restart: Don't calculate address of sub ctx if ctx is NULL 
All modules using restartable ECC operations support passing `NULL`
as the restart context as a means to not use the feature.

The restart contexts for ECDSA and ECP are nested, and when calling
restartable ECP operations from restartable ECDSA operations, the
address of the ECP restart context to use is calculated by adding
the to the address of the ECDSA restart context the offset the of
the ECP restart context.

If the ECP restart context happens to not reside at offset `0`, this
leads to a non-`NULL` pointer being passed to restartable ECP
operations from restartable ECDSA-operations; those ECP operations
will hence assume that the pointer points to a valid ECP restart
address and likely run into a segmentation fault when trying to
dereference the non-NULL but close-to-NULL address.

The problem doesn't arise currently because luckily the ECP restart
context has offset 0 within the ECDSA restart context, but we should
not rely on it.

This commit fixes the passage from restartable ECDSA to restartable ECP
operations by propagating NULL as the restart context pointer.

Apart from being fragile, the previous version could also lead to
NULL pointer dereference failures in ASanDbg builds which dereferenced
the ECDSA restart context even though it's not needed to calculate the
address of the offset'ed ECP restart context.

dummy
2019-07-19 13:03:10 +01:00
..
.gitignore Split libs with make + general make cleanups 2015-06-25 10:59:56 +02:00
aes.c Add further missing brackets around macro parameters 2019-02-19 17:59:57 +00:00
aesni.c Warn if using a memory sanitizer on AESNI 2018-04-05 15:37:38 +02:00
arc4.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
aria.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
asn1parse.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
asn1write.c Add new function mbedtls_asn1_write_named_bitstring() 2019-02-28 09:36:30 +00:00
base64.c Add comment to integer overflow fix in base64.c 2017-02-15 23:31:07 +02:00
bignum.c Merge remote-tracking branch 'origin/pr/2405' into development 2019-04-05 14:08:49 +01:00
blowfish.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
camellia.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ccm.c Merge remote-tracking branch 'origin/pr/2092' into development 2019-04-24 11:17:21 +01:00
certs.c Re-generate library/certs.c from script 2019-06-03 17:46:56 +01:00
chacha20.c Improve macro hygiene 2019-02-19 17:59:00 +00:00
chachapoly.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
cipher.c Wrap lines at 80 columns 2019-04-02 10:07:28 -07:00
cipher_wrap.c Wrap lines at 80 columns 2019-04-02 10:07:28 -07:00
cmac.c Merge remote-tracking branch 'public/pr/1390' into development 2018-06-27 10:51:47 +01:00
CMakeLists.txt Remove use of CMAKE_SOURCE_DIR 2019-06-25 13:33:51 +01:00
ctr_drbg.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
debug.c Merge remote-tracking branch 'origin/pr/1818' into development 2019-03-05 16:27:38 +00:00
des.c Improve macro hygiene 2019-02-19 17:59:00 +00:00
dhm.c Allow DHM self test to run without MBEDTLS_PEM_PARSE_C 2019-06-03 17:46:56 +01:00
ecdh.c Fix ECDH secret export for Mongomery curves 2019-02-26 16:49:52 +00:00
ecdsa.c ECP restart: Don't calculate address of sub ctx if ctx is NULL 2019-07-19 13:03:10 +01:00
ecjpake.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
ecp.c Merge remote-tracking branch 'origin/pr/2092' into development 2019-04-24 11:17:21 +01:00
ecp_curves.c Improve macro hygiene 2019-02-19 17:59:00 +00:00
entropy.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
entropy_poll.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
error.c Add specific SSL error code for unexpected CIDs 2019-06-03 16:07:50 +01:00
gcm.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
havege.c Improve macro hygiene 2019-02-19 17:59:00 +00:00
hkdf.c Fix issue if salt = NULL and salt_len !=0 in mbedtls_hkdf_extract() 2018-07-23 10:34:47 -07:00
hmac_drbg.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
Makefile Consistently spell -Wextra 2019-07-02 20:05:16 +02:00
md.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md2.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md4.c Add more missing parentheses around macro parameters 2019-02-19 17:59:57 +00:00
md5.c Add further missing brackets around macro parameters 2019-02-19 17:59:57 +00:00
md_wrap.c New MD API: rename functions from _ext to _ret 2018-01-22 11:54:42 +01:00
memory_buffer_alloc.c Fix braces in mbedtls_memory_buffer_alloc_status() 2018-06-12 16:56:04 +01:00
net_sockets.c net_sockets: Fix typo in net_would_block() 2019-06-20 10:48:11 +01:00
nist_kw.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
oid.c Add support for RSA PKCSv1.5 signatures using RIPEMD-160 2019-05-06 12:15:17 -04:00
padlock.c Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
pem.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pk.c pk: restructure precondition check 2019-02-05 05:09:05 -05:00
pk_wrap.c Fix outdated comment in ecdsa_verify_wrap() 2019-01-29 08:26:15 +00:00
pkcs5.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pkcs11.c Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
pkcs12.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pkparse.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
pkwrite.c Merge development-psa commit 80b5662 into development-psa-merged branch 2019-02-05 06:02:51 -05:00
platform.c Merge remote-tracking branch 'origin/pr/1551' into development 2019-01-30 13:24:55 +00:00
platform_util.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
poly1305.c Improve macro hygiene 2019-02-19 17:59:00 +00:00
ripemd160.c Improve macro hygiene 2019-02-19 17:59:00 +00:00
rsa.c rsa: Enable use of zero-length null output 2019-02-11 03:39:51 -05:00
rsa_internal.c Bignum: Deprecate mbedtls_mpi_is_prime() 2018-10-09 16:36:53 +01:00
sha1.c Add further missing brackets around macro parameters 2019-02-19 17:59:57 +00:00
sha256.c Add further missing brackets around macro parameters 2019-02-19 17:59:57 +00:00
sha512.c Add more missing parentheses around macro parameters 2019-02-19 17:59:57 +00:00
ssl_cache.c Remove peer CRT from cache if !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE 2019-02-26 14:38:09 +00:00
ssl_ciphersuites.c Reduce priority of 3DES ciphersuites 2019-03-01 10:19:27 +01:00
ssl_cli.c Rename MBEDTLS_SSL_CID to MBEDTLS_SSL_DTLS_CONNECTION_ID 2019-06-03 16:07:50 +01:00
ssl_cookie.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
ssl_srv.c Rename MBEDTLS_SSL_CID to MBEDTLS_SSL_DTLS_CONNECTION_ID 2019-06-03 16:07:50 +01:00
ssl_ticket.c Fix typo in SSL ticket documentation 2019-02-26 14:38:09 +00:00
ssl_tls.c ssl_tls: Enable Suite B with subset of ECP curves 2019-06-20 10:59:05 +01:00
threading.c Don't declare and define gmtime()-mutex on Windows platforms 2018-09-06 12:09:56 +01:00
timing.c timing: Remove redundant include file 2019-06-20 10:51:21 +01:00
version.c Fix missing void argument declarations #678 2016-11-04 23:05:56 +01:00
version_features.c Merge remote-tracking branch 'origin/pr/2697' into development 2019-06-21 13:21:05 +01:00
x509.c Improve documentation of mbedtls_x509_get_ext() 2019-06-04 13:59:55 +01:00
x509_create.c Break overly long line in library/x509_create.c 2018-11-02 10:52:38 +00:00
x509_crl.c Always return a high-level error code from X.509 module 2019-06-04 13:59:48 +01:00
x509_crt.c Deref pointer when using sizeof in x509_get_other_name 2019-06-24 09:17:18 -04:00
x509_csr.c Merge development commit 8e76332 into development-psa 2019-01-31 08:20:20 -05:00
x509write_crt.c Avoid use of large stack buffers in mbedtls_x509_write_crt_pem() 2019-05-04 08:13:23 +01:00
x509write_csr.c Add new function mbedtls_asn1_write_named_bitstring() 2019-02-28 09:36:30 +00:00
xtea.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00