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Hanno Böck eba8bf485a Call of memcmp with null pointers in obj_cmp() 
The function obj_cmp() (file crypto/objects/obj_dat.c) can in some
situations call memcmp() with a null pointer and a zero length.

This is invalid behaviour. When compiling openssl with undefined
behaviour sanitizer (add -fsanitize=undefined to compile flags) this
can be seen. One example that triggers this behaviour is the pkcs7
command (but there are others, e.g. I've seen it with the timestamp
function):
apps/openssl pkcs7 -in test/testp7.pem

What happens is that obj_cmp takes objects of the type ASN1_OBJECT and
passes their ->data pointer to memcmp. Zero-sized ASN1_OBJECT
structures can have a null pointer as data.

RT#3816

Signed-off-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2b8dc08b74fc3c6d4c2fc855cc23bac691d985be)
2015-05-13 15:28:48 +01:00
..
aes
aes/asm/aesni-x86.pl: fix typo affecting Windows build.
2015-04-20 18:40:46 +02:00
asn1
Fix encoding bug in i2c_ASN1_INTEGER
2015-04-18 14:43:33 +01:00
bf
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
bio
Clarify logic in BIO_*printf functions
2015-04-30 23:21:53 +01:00
bn
make update
2015-04-21 17:50:36 +02:00
buffer
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
camellia
Fix crash in SPARC T4 XTS.
2015-02-24 10:12:57 +01:00
cast
Re-align some comments after running the reformat script.
2015-01-22 09:31:48 +00:00
cmac
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
cms
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
comp
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
conf
RT3670: Check return from BUF_MEM_grow_clean
2015-02-12 13:01:33 -05:00
des
Sanity check DES_enc_write buffer length
2015-04-30 23:14:55 +01:00
dh
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
dsa
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
dso
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
ec
Add sanity check to print_bin function
2015-04-30 23:21:53 +01:00
ecdh
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ecdsa
Fix RAND_(pseudo_)?_bytes returns
2015-03-25 12:41:28 +00:00
engine
Remove unused eng_rsax and related asm file
2015-01-26 10:46:26 -05:00
err
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
evp
Sanity check EVP_EncodeUpdate buffer len
2015-04-30 23:21:53 +01:00
hmac
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
idea
Re-align some comments after running the reformat script.
2015-01-22 09:31:48 +00:00
jpake
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
krb5
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
lhash
Re-align some comments after running the reformat script.
2015-01-22 09:31:48 +00:00
md2
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
md4
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
md5
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
mdc2
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
modes
Appease clang -Wshadow
2015-04-08 17:59:41 +02:00
objects
Call of memcmp with null pointers in obj_cmp()
2015-05-13 15:28:48 +01:00
ocsp
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
pem
Fix formatting error in pem.h
2015-01-22 14:11:04 +00:00
perlasm
Fix crash in SPARC T4 XTS.
2015-02-24 10:12:57 +01:00
pkcs7
PKCS#7: avoid NULL pointer dereferences with missing content
2015-03-19 12:58:35 +00:00
pkcs12
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
pqueue
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
rand
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
rc2
Re-align some comments after running the reformat script.
2015-01-22 09:31:48 +00:00
rc4
Re-align some comments after running the reformat script.
2015-01-22 09:31:48 +00:00
rc5
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ripemd
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
rsa
Fix buffer overrun in RSA signing
2015-04-30 23:21:53 +01:00
seed
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
sha
sha/asm/sha*-armv8.pl: add Denver and X-Gene esults.
2015-04-02 09:51:32 +02:00
srp
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
stack
Fix memset call in stack.c
2015-03-17 13:48:04 +00:00
store
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
threads
Code style: space after 'if'
2015-04-16 13:50:01 -04:00
ts
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
txt_db
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ui
Assume TERMIOS is default, remove TERMIO on all Linux.
2015-02-22 08:10:29 +01:00
whrlpool
Re-align some comments after running the reformat script.
2015-01-22 09:31:48 +00:00
x509
Fix cut/paste error
2015-05-04 10:54:18 -04:00
x509v3
Add missing NULL check in X509V3_parse_list()
2015-05-11 12:19:54 +01:00
.cvsignore
Apply mingw patches as supplied by Roumen Petrov an Alon Bar-Lev
2008-04-17 10:19:16 +00:00
alphacpuid.pl
Alpha assembler fixed from HEAD.
2011-08-12 12:31:08 +00:00
arm64cpuid.S
Add linux-aarch64 taget.
2014-06-10 23:20:55 +02:00
arm_arch.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
armcap.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
armv4cpuid.S
Remove inconsistency in ARM support.
2015-01-06 11:14:23 +01:00
constant_time_locl.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
constant_time_test.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
cpt_err.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
cryptlib.c
RT3820: Don't call GetDesktopWindow()
2015-05-02 08:01:52 -04:00
cryptlib.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
crypto-lib.com
Adjust VMS build to Unix build. Most of all, make it so the disabled
2014-06-18 13:43:09 +02:00
crypto.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
cversion.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ebcdic.c
Appease clang -Wempty-translation-unit
2015-04-08 17:59:40 +02:00
ebcdic.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ex_data.c
Fix memory leak reporting.
2015-02-09 13:01:15 +00:00
fips_err.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
fips_ers.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ia64cpuid.S
IA64 assembler pack update from HEAD.
2011-11-14 20:45:57 +00:00
install-crypto.com
Adjust VMS build to Unix build. Most of all, make it so the disabled
2014-06-18 13:43:09 +02:00
LPdir_nyi.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
LPdir_unix.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
LPdir_vms.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
LPdir_win32.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
LPdir_win.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
LPdir_wince.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
Makefile
Make output from openssl version -f consistent with previous versions
2015-01-13 11:28:54 +00:00
md32_common.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
mem_clr.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
mem_dbg.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
mem.c
Fix CRYPTO_strdup
2015-04-22 17:20:38 +01:00
o_dir_test.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
o_dir.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
o_dir.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
o_fips.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
o_init.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
o_str.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
o_str.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
o_time.c
Re-align some comments after running the reformat script.
2015-01-22 09:31:48 +00:00
o_time.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
opensslconf.h.in
Eliminate warning induced by http://cvs.openssl.org/chngview?cn=14690 and
2005-12-16 10:37:24 +00:00
opensslv.h
Prepare for 1.0.2b-dev
2015-03-19 13:34:56 +00:00
ossl_typ.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
pariscid.pl
PA-RISC assembler pack: switch to bve in 64-bit builds.
2013-06-30 23:13:23 +02:00
ppc_arch.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ppccap.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
ppccpuid.pl
Initial POWER8 support from development branch.
2014-07-20 14:36:49 +02:00
s390xcap.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
s390xcpuid.S
s390x assembler pack update from HEAD.
2011-11-14 20:47:22 +00:00
sparc_arch.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
sparccpuid.S
sparcv9cap.c: update from master.
2013-05-20 00:16:18 +02:00
sparcv9cap.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
symhacks.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
uid.c
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
vms_rms.h
Run util/openssl-format-source -v -c .
2015-01-22 09:31:38 +00:00
x86_64cpuid.pl
x86[_64]cpuid.pl: add low-level RDSEED.
2014-02-14 17:25:14 +01:00
x86cpuid.pl
x86[_64]cpuid.pl: add low-level RDSEED.
2014-02-14 17:25:14 +01:00