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[wolfssl] Build fuzzers for two bignum implementations (#4884) 

* [wolfssl] Build fuzzers for two bignum implementations

* [wolfssl] Don't build bignum fuzzers with dataflow

* [wolfssl] Build MemorySanitizer bignum fuzzers with --disable-asm
This commit is contained in:
Guido Vranken 2020-12-24 17:44:27 +01:00 committed by GitHub
parent 3f2cbfdc11
commit c5af59803c
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2 changed files with 76 additions and 1 deletions
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4
projects/wolfssl/Dockerfile
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@ -16,11 +16,13 @@
FROM gcr.io/oss-fuzz-base/base-builder
RUN apt-get update && apt-get install -y make autoconf automake libtool zip
RUN apt-get update && apt-get install -y make autoconf automake libtool zip wget python
RUN git clone https://github.com/wolfssl/wolfssl --depth 1 $SRC/wolfssl
RUN git clone --depth 1 https://github.com/wolfSSL/wolfssh.git
RUN git clone --depth 1 https://github.com/guidovranken/fuzzing-headers.git
RUN git clone --depth 1 https://github.com/guidovranken/wolf-ssl-ssh-fuzzers
RUN git clone --depth 1 https://github.com/guidovranken/cryptofuzz
RUN wget https://dl.bintray.com/boostorg/release/1.74.0/source/boost_1_74_0.tar.bz2
RUN git clone https://github.com/wolfssl/oss-fuzz-targets --depth 1 $SRC/fuzz-targets
WORKDIR wolfssl

73
projects/wolfssl/build.sh
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@ -17,6 +17,77 @@
if [[ $CFLAGS != *sanitize=dataflow* ]]
then
WOLFCRYPT_CONFIGURE_PARAMS="--enable-static --enable-md2 --enable-md4 --enable-ripemd --enable-blake2 --enable-blake2s --enable-pwdbased --enable-scrypt --enable-hkdf --enable-cmac --enable-arc4 --enable-camellia --enable-rabbit --enable-aesccm --enable-aesctr --enable-hc128 --enable-xts --enable-des3 --enable-idea --enable-x963kdf --enable-harden --enable-aescfb --enable-aesofb --enable-aeskeywrap --enable-keygen --enable-curve25519 --enable-curve448 --enable-shake256 --disable-crypttests --disable-examples --enable-compkey --enable-ed448 --enable-ed25519 --enable-ecccustcurves --enable-xchacha --enable-cryptocb --enable-eccencrypt"
if [[ $CFLAGS = *sanitize=memory* ]]
then
WOLFCRYPT_CONFIGURE_PARAMS="$WOLFCRYPT_CONFIGURE_PARAMS --disable-asm"
fi
# Install Boost headers
cd $SRC/
tar jxf boost_1_74_0.tar.bz2
cd boost_1_74_0/
CFLAGS="" CXXFLAGS="" ./bootstrap.sh
CFLAGS="" CXXFLAGS="" ./b2 headers
cp -R boost/ /usr/include/
OLD_CFLAGS="$CFLAGS"
OLD_CXXFLAGS="$CXXFLAGS"
# Configure Cryptofuzz
cd $SRC/cryptofuzz/
python gen_repository.py
rm extra_options.h
echo -n '"' >>extra_options.h
echo -n '--force-module=wolfCrypt ' >>extra_options.h
echo -n '--digests=NULL ' >>extra_options.h
echo -n '--operations=BignumCalc,DH_GenerateKeyPair,DH_Derive,ECC_GenerateKeyPair,ECC_PrivateToPublic,ECC_ValidatePubkey,ECDSA_Verify,ECDSA_Sign' >>extra_options.h
echo -n '"' >>extra_options.h
# Build sp-math-all fuzzer
cp -R $SRC/cryptofuzz/ $SRC/cryptofuzz-sp-math-all/
cp -R $SRC/wolfssl/ $SRC/wolfssl-sp-math-all/
cd $SRC/wolfssl-sp-math-all/
autoreconf -ivf
CFLAGS="$CFLAGS -DHAVE_AES_ECB -DWOLFSSL_DES_ECB -DHAVE_ECC_SECPR2 -DHAVE_ECC_SECPR3 -DHAVE_ECC_BRAINPOOL -DHAVE_ECC_KOBLITZ -DWOLFSSL_ECDSA_SET_K"
./configure $WOLFCRYPT_CONFIGURE_PARAMS --enable-sp-math-all
sed -i 's/-Werror//g' Makefile # Workaround for https://github.com/wolfSSL/wolfssl/issues/3589
make -j$(nproc)
export CXXFLAGS="$CXXFLAGS -DCRYPTOFUZZ_NO_OPENSSL -DCRYPTOFUZZ_WOLFCRYPT"
export WOLFCRYPT_LIBWOLFSSL_A_PATH="$SRC/wolfssl-sp-math-all/src/.libs/libwolfssl.a"
export WOLFCRYPT_INCLUDE_PATH="$SRC/wolfssl-sp-math-all/"
cd $SRC/cryptofuzz-sp-math-all/modules/wolfcrypt
make -j$(nproc)
cd $SRC/cryptofuzz-sp-math-all/
LIBFUZZER_LINK="$LIB_FUZZING_ENGINE" make -B -j$(nproc)
cp cryptofuzz $OUT/cryptofuzz-sp-math-all
CFLAGS="$OLD_CFLAGS"
CXXFLAGS="$OLD_CXXFLAGS"
unset WOLFCRYPT_LIBWOLFSSL_A_PATH
unset WOLFCRYPT_INCLUDE_PATH
# Build disable-fastmath fuzzer
cp -R $SRC/cryptofuzz/ $SRC/cryptofuzz-disable-fastmath/
cp -R $SRC/wolfssl/ $SRC/wolfssl-disable-fastmath/
cd $SRC/wolfssl-disable-fastmath/
autoreconf -ivf
CFLAGS="$CFLAGS -DHAVE_AES_ECB -DWOLFSSL_DES_ECB -DHAVE_ECC_SECPR2 -DHAVE_ECC_SECPR3 -DHAVE_ECC_BRAINPOOL -DHAVE_ECC_KOBLITZ -DWOLFSSL_ECDSA_SET_K"
./configure $WOLFCRYPT_CONFIGURE_PARAMS --disable-fastmath
make -j$(nproc)
export CXXFLAGS="$CXXFLAGS -DCRYPTOFUZZ_NO_OPENSSL -DCRYPTOFUZZ_WOLFCRYPT"
export WOLFCRYPT_LIBWOLFSSL_A_PATH="$SRC/wolfssl-disable-fastmath/src/.libs/libwolfssl.a"
export WOLFCRYPT_INCLUDE_PATH="$SRC/wolfssl-disable-fastmath/"
cd $SRC/cryptofuzz-disable-fastmath/modules/wolfcrypt
make -j$(nproc)
cd $SRC/cryptofuzz-disable-fastmath/
LIBFUZZER_LINK="$LIB_FUZZING_ENGINE" make -B -j$(nproc)
cp cryptofuzz $OUT/cryptofuzz-disable-fastmath
CFLAGS="$OLD_CFLAGS"
CXXFLAGS="$OLD_CXXFLAGS"
unset WOLFCRYPT_LIBWOLFSSL_A_PATH
unset WOLFCRYPT_INCLUDE_PATH
# Build SSL/SSH fuzzers
NEW_SRC=$SRC/wolf-ssl-ssh-fuzzers/oss-fuzz/projects/wolf-ssl-ssh/
cp -R $SRC/wolfssl/ $NEW_SRC
cp -R $SRC/wolfssh/ $NEW_SRC
@ -24,6 +95,8 @@ then
OSS_FUZZ_BUILD=1 SRC="$NEW_SRC" $NEW_SRC/build.sh
fi
cd $SRC/wolfssl
# target_dir determined by Dockerfile
target_dir="$SRC/fuzz-targets"